- Cosmo-torun - cosmo.torun.pl

GNC meeting 2024
by Mariana Jaber 25 Mar '24

25 Mar '24

Apologies if you receive this multiple times. ---- I'd like to bring your attention to the conference organized by the University of Szczecin, in Poland. This meeting will focus on astrophysics research supporting various domains, including astroparticle (gamma-ray and cosmic-ray), X-ray, gravitational- waves, observational cosmology, exoplanet, and stellar astrophysics. There is no registration fee, and the meeting will be both in person and online. For further details, please visit the following link: https://gnc2024.physics.muni.cz/ The link for registration: https://gnc2024.physics.muni.cz/register.html ----

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Re: [Cosmo-torun] IAU B1 Newsletter No.6 Aug. 11, 2020
by Boud Roukema 15 Aug '20

15 Aug '20

Dear Dmitry, On Tue, 11 Aug 2020, Dmitry Bisikalo wrote: > With this letter, we kindly ask for your view on the format this > meeting should take and how it should be organized. Specifically, we > ask you to answer the following questions. You have omitted the most important question: 0. What practical and ethical guidelines do you recommend for (i) the software and (ii) the hosting services to use for the online meeting? Could you please send this question to Commission B1 members? Thank you in advance. My answers are below. > 1. Would you be interested in participating in such a meeting and in > giving a talk? If yes, please, provide a (very preliminary) title of > your presentation. Tentatively, yes: "A galaxy formation software pipeline aiming at full reproducibility on any POSIX-compatible operating system" > 2. Which way of giving a talk would be more suitable for you, live > presentations or pre-recorded ones? I see little point in pre-recorded presentations - conferences are most useful for their interactive aspects. > Should we include only short contributed talks in the program or > will some more extended review talks also be helpful? I think that reviews should be proposed as drafts on any git repository satisfying IAU ethical guidelines. (Repositories that forbid access to scientists based on their nationality or geographical location are disqualified under IAU anti-discrimination guidelines; this disqualifies github and bitbucket.) > 3. Should we plan a special session limited to topical discussions? > Can you suggest some issues to be discussed at the session? A topical discussion on reproducibility, free licensing and long-term sustainable astronomy software development would be very useful. Too many astronomers choose "direct action" - we publish software on a git repository with a fuzzy licence (or an absent licence, i.e. the Berne convention, which forbids copying, modification and redistribution) and ignore the question of long-term integration of astronomy software into the wider free-software and open-source-definition-software (FOSS) environment. Question 0 for Commission B1 members: What practical and ethical guidelines do you recommend for (i) the software and (ii) the hosting services to use for the online meeting? 0.(i) The conferencing software must be free-licensed, with a licence satisfying either the free software definition or the open source definition. The software must use open protocols that are compatible with free-software licences and that do not restrict astronomers to any particular vendors (corporations or citizens' associations or individual hosters). Practical videoconferencing possibilities include bigbluebutton (bbb), jitsi, jami [1], the matrix protocol (with a front end such as element.io) [2], and irc (well-tested over many decades and highly efficient). 0.(ii) The hosting services should (1) allow the astronomers using the service to install the conferencing software on their own servers, e.g. at their research institute; (2) allow wide interoperability with equivalent services; (3) allow easy and practical export of the astronomers' stored data from that particular service; (4) must not require the astronomer to install any unverifiable (e.g. binary) software on his/her computer. These reasons are all practical rather than ethical. Criteria (i) + (ii) imply that Zoom and Slack are excluded, because they violate most of the practical constraints (1)-(4). Moreover, the ethical violation with using Zoom or Slack (or MS Teams or an equivalent Google service) is that "the astronomer is the product to be sold to advertisers". Astronomy, especially in the context of the IAU, is meant to be an inspiration and example to the world. We should not give the wider public the bad example of humans becoming products to be sold to advertisers. For more details on bbb/jitsi/jami/matrix, see [1] https://switching.software/replace/zoom [2] https://switching.software/replace/slack For more details on the overall answers and the IAU's practical and ethical considerations to take into account for question 0, see [3] https://cosmo.torun.pl/blog/slack_zoom_prison . > Since we believe that a preference should be given to young > scientists (PHD students, young PHDs within three years after the > defense), we would be grateful if you spread this information among > young researchers in your home institution. The easiest way to do this is with a conventional mailing list, so I'm cc-ing this answer to our local publicly archived mailing list. I see nothing private in your questions, and after all, the IAU is a network of citizens' associations, so we really should be shifting to fully public, transparent, rational discussion. Commission B1 - Computational Astrophysics [4] - has even less justification for secrecy than any other part of the IAU! :) > We will be grateful to receive your responses by 1st September, > 2020. And do not forget that the IAU Symposium 362 is not cancelled > but just postponed till June 2021! > Yours sincerely, > Members of the IAU Commission B1 Organizing Committee Regards Boud [4] https://www.iau.org/science/scientific_bodies/commissions/B1/

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A possible crisis for cosmology - Cosmology Journal Club 18/11
by Matteo Cinus 14 Nov '19

14 Nov '19

Dear all, I am writing to invite you to our next meeting of the Cosmology Journal Club in which we will discuss the paper "Planck evidence for a closed Universe and a possible crisis for cosmology" from Eleonora Di Valentino, Alessandro Melchiorri and Joseph Silk, published recently on Nature Astronomy, https://www.nature.com/articles/s41550-019-0906-9, and also available on ArXiv at the link below, https://arxiv.org/abs/1911.02087. The paper has attracted the media attention since it calls for a serious rethinking of the concordance model of cosmology. The meeting will take place at the Institute of Astronomy, in the Conference room at 12.15. Come join the discussion if you want to know more. Best Regards, Matteo Cinus

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Cosmo journal club 4.11.2019 @ 12:15 KRA, Piwnice
by Justyna Borkowska 03 Nov '19

03 Nov '19

Hi all, at tomorrow's journal club (KRA Piwnice, after the seminar) I'd like to discuss the https://arxiv.org/abs/1909.13489 article ("Another look at redshift drift and the backreaction conjecture"). See you tomorrow, Cheers Justyna

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Cosmo Jnl Club 12:15 Mon 28.X.2019 Mariana: ArXiv:1910.04750
by Mariana Jaber 25 Oct '19

25 Oct '19

Hello everybody, this is to tell you we’re discussing this paper (ArXiv:1910.04750) next journal club. The meeting will take place after Monday’s seminar, this is around 12.15hrs in Piwnice. The paper is titled “Deficit of Luminous and Normal Red Galaxies in Cosmic Voids” and I will be presenting it but please feel free to read it as well so we can discuss it together. Best, -Mariana

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LSST-PL 14 March 2019@NCBJ
by Boud Roukema 08 Mar '19

08 Mar '19

hi cosmo-torun, In case anyone is interested, a 1-day LSST-PL kick-off meeting for science and organising issues will take place on Thursday: LSST-PL 11:00-18:00 Thursday 14 March 2019@NCBJ https://events.ncbj.gov.pl/event/10/ If you are likely to attend, then please register, even if you don't intend to present a talk - this is for practical reasons in terms of handling things like the number of chairs and choice of room. pozdr Boud

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Inhomogeneous Cosmologies IV, Torun, 14-19 July 2019
by Boud Roukema 31 Jan '19

31 Jan '19

Inhomogeneous Cosmologies IV, Torun, 14-19 July 2019 During 14-19 July 2019 we are gathering experts in inhomogeneous cosmology for a small workshop of about 30 participants at Nicolaus Copernicus University in Torun, the town where Copernicus was born. We wish to map out the most promising directions for analytical, numerical and observational investigations aimed to take into account both structure formation and cosmological expansion within the constraints of general relativity. Can we clarify the physics present in the relativistic cosmology software now being developed? Are the calculations artificially constrained or are they fully relativistic? Can we achieve accurate postdiction of cosmological observations and follow up by making predictions for the upcoming decade of new major survey projects? We expect vigorous, constructive debate between "one-percenters" and "order-unity" proponents, and practical hands-on sessions of free-licensed inhomogeneous cosmology software packages. Feel free to redistribute this announcement. Check the CosmoTorun19 website or subscribe to the inhom newsletter to know when registration is open. More info: https://cosmo.torun.pl/CosmoTorun19 Newsletter 'inhom': https://cosmo.torun.pl/mailman/listinfo/inhom Contact: cosmotorun19 at cosmo.torun.pl Organising committee: Boud Roukema, Eloisa Bentivegna, Krzysztof Bolejko, Thomas Buchert, Mikolaj Korzyński, Hayley Macpherson, Jan Ostrowski, Sebastian Szybka, Eleonora Villa, David Wiltshire Topics will include: * exact cosmological solutions of the Einstein equations * averaging and backreaction in cosmology * numerical cosmological relativity * observational tests

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Hubble-Lemaitre Law
by Andrzej Marecki 31 Aug '18

31 Aug '18

30th IAU GA resolution: www.iau.org/static/archives/announcements/pdf/ann18029e.pdf -- am

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some good links on scientific writing
by Boud Roukema 04 May '15

04 May '15

hi cosmo-torun, With a search engine, anyone can easily find some good "how to write good scientific English" guides, but here are a few that seem especially useful. For our writing of journal articles, PhD theses, and lic/mag theses, I think that these could be very useful. Even if you write in Polish, many of the principles are likely to be the same. * Grammatical and scientific correctness are necessary, but not sufficient, to provide a high probability of the reader understanding some scientific text. Gopen and Swan argue that writing short sentences is not necessarily enough either; and avoiding technical language does not necessarily improve readability either. They provide concrete examples and show how and why the examples could be rewritten more clearly: http://www.americanscientist.org/issues/pub/the-science-of-scientific-writi… * The "see also" section of this Wikipedia article seems to be its most useful part: https://en.wikipedia.org/wiki/Scientific_writing#See_also https://en.wikipedia.org/w/index.php?title=Scientific_writing&oldid=6275008… * European scientific writing guidelines, including a partly Polish guideline of how to write in English: http://www.ease.org.uk/publications/author-guidelines http://www.ease.org.uk/sites/default/files/ease_guidelines-june2014-polish.… Cheers Boud

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arXiv:1410.1687 - measuring inhomogeneity in the metric
by Boud Roukema 14 Oct '14

14 Oct '14

hi cosmo-torun, Our new observational method of measuring inhomogeneity in the metric, and the initial results, are now public: http://arxiv.org/abs/1410.1687 This will make it even harder to explain the FLRW interpretation of observations to people just learning standard FLRW cosmology - what do "comoving coordinates" mean physically when one of the best known "comoving" tracers - the baryonic acoustic oscillation peak at about 105 Mpc/h - is an environmentally dependent length scale? I have been telling almost every monograph or cosmology class at TCfA since I arrived in Torun that a scale as large as 100 Mpc/h should definitely be considered as comoving. Now we know that that's an oversimplification. pozdr Boud

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Cosmography of the local Univese - nice animation.
by Tomasz Kazimierczak 15 Jun '14

15 Jun '14

Hi cosmo-torun, A nice animation of the local Universe made by Hélène Courtois, Daniel Pomarède, R. Brent Tully, Yehuda Hoffman, and Denis Courtois link: http://vimeo.com/66641648 and theirs publication: http://arxiv.org/abs/1306.0091 What is astonishing for me, it is velocity field and flow of matter reconstruction. Cheers, Tomek ================================================ Tomasz Kazimierczak Nicolaus Copernicus University, Torun Centre for Astronomy, Department of Radio Astronomy email: tomasz.kazimierczak(a)astro.uni.torun.pl

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B-modes: premature discovery announcement?
by Boud Roukema 23 May '14

23 May '14

hi cosmo-torun, A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty Michael J. Mortonson, Uroš Seljak http://arxiv.org/abs/1405.5857 "... The resulting joint BICEP2+Planck analysis favors solutions without gravity waves, and the upper limit on the tensor-to-scalar ratio is $r<0.11$, a slight improvement relative to the Planck analysis alone which gives $r<0.13$ ($95\%$ c.l.). The estimated amplitude of the dust polarization power spectrum is in rough agreement with expectations for this field based on HI column density. ..." Popular science description: https://www.sciencemag.org/content/344/6186/790.full pozdr Boud

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proof for gravitational waves?
by Tomasz Kazimierczak 18 Mar '14

18 Mar '14

Hi all, Hot news in media, according to which there is detection of gravitational waves by the BICEP2 experiment. It is something about messuring b-mode polarisation of CMB, that's all what I undersdand. Links: media: http://news.stanford.edu/news/2014/march/physics-cosmic-inflation-031714.ht… project: http://bicepkeck.org/ paper:http://bicepkeck.org/b2_respap_arxiv_v1.pdf Can we say it is a direct evidence for gravitational waves or rather it should be said indirect? Pozdr, Tomek

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Proposed PRISM space mission (fwd)
by Boud Roukema 11 Jul '13

11 Jul '13

> ---------- Forwarded message ---------- > Date: Wed, 10 Jul 2013 20:38:22 +0200 > From: Jacques Delabrouille ... > To: boud ... > Subject: Proposed PRISM space mission > > Dear Boud, > As you may have heard, we have answered the recent call for science themes for future ESA missions with a concept called PRISM (Polarised Radiation > Imaging and Spectroscopy Mission) -- The name was given before we heard of the NSA's version of PRISM... > As this mission might be of interest to you and your colleagues in Torun, I am sending you this information, which I encourage you to send to the > Polish community susceptible to be interested in this science, either on the theoretical or the experimental side, and/or involved in the project. > > The main idea of the mission is an ultra-sensitive spectro-polarimetric survey of the entire sky from about 30 GHz to about 6 THz. > > The science case is as broad as possible to serve a very large scientific community. The main themes for cosmology and fundamental physics are: > - A complete census of the Dark Matter, hot gas, dusty galaxies in our Hubble volume, and corresponding constraints on cosmology, dark energy, > cluster physics, structure formation, star formation, etc. > - The ultimate measurement of CMB polarization, to constrain primordial GW and inflationary scenarios > - The measurement of the CMB frequency spectrum, to explore energy injection at z<10^6 by processes such as reionization, decay of DM particles, > evaporation of mini black holes, etc. > > Details are in http://adsabs.harvard.edu/abs/2013arXiv1306.2259P and on our website (http://www.prism-mission.org). > > Do not hesitate to ask questions if you have any. Support (by signing-up and encouraging people to sign-up on our web site) would be very useful > (there are already a small number of Polish scientists who expressed interest, but I am sure many more still have not received this information). > > Best, > > Jacques > > > ----------------------------------------------------------------- > Jacques Delabrouille > CNRS, Laboratoire APC, > Université Paris Diderot, Bâtiment Condorcet > 10, rue Alice Domon et Léonie Duquet > 75205 Paris cedex 13, FRANCE > Telephone: +33 1 57 27 60 40 > Fax: +33 1 57 27 60 71 > ----------------------------------------------------------------- > http://www.apc.univ-paris7.fr/~delabrou/ > -----------------------------------------------------------------

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Mon 24 June 2013 cosmo workshop proposal
by Boud Roukema 23 Jun '13

23 Jun '13

hi everyone Here's my proposal for our workshop Monday 24 June. Each speaker is free to divide up the 30 minutes how he wishes, but the aim is for this to be interactive, so I suggest a maximum of 15-20 minutes of "presentation". TCfA Cosmology workshop 24.06.2013 @KRA 14:00 Roukema - TCfA cosmology group 14:20 Lew - Search for SZ galaxy clusters in simulations 14:50 - 10 minutes break 15:00 Kazimierczak - cosmic topology 15:30 Fujii - Nontoroidal topological lensing among SDSS quasars 16:00 Buliński - cosmic topology 16:10 - 10 minutes break 16:40 Ostrowski - inhomogeneous cosmo - Lagrangian approach 17:10 Matczyński - cosmology tools: IPython Może być? pozdr boud

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Planck pdf presentations
by Boud Roukema 19 Apr '13

19 Apr '13

hi cosmo-torun Some Planck pdf presentations: http://www.rssd.esa.int/index.php?project=PLANCK&page=47_ESLAB pozdr boud

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CMB data from PLANCK revealed
by Tomasz Kazimierczak 22 Mar '13

22 Mar '13

Hi cosmo-torun, First CMB data from PLANCK mission revealed! http://www.esa.int/Our_Activities/Space_Science/Planck/Planck_reveals_an_al… Pozdr, Tomek

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13:00 Fri 22 Mar: Virialization-induced curvature as a physical explanation for dark energy
by Boud Roukema 20 Mar '13

20 Mar '13

hi cosmo-torun For this Friday I propose a combined workshop and "Kosmologia" lecture. The one-line sound-bite is: "dark energy is the ordinary, relativistic, negative curvature of voids, which FLRW doesn't allow". 13:00 Fri 22 Mar: Virialization-induced curvature as a physical explanation for dark energy Abstract: "Dark energy" occurs during the redshift range over which the Universe becomes virialised, i.e. inhomogeneous, meaning that the homogeneous model should fail. Adding virialisation-induced negative curvature (of voids) to an Einstein-de Sitter (Omega_m = 1, Omega_Lambda = 0) model brings its d_L(z) relation close to that of the standard, Newtonian-void LambdaCDM model. Dark energy is most simply interpreted as an artefact of forcing voids to be flat, Newtonian voids. URL: http://arXiv.org/abs/1303.4444 For official "Kosmologia" hours, the doktoranci should stay a little longer for discussion. pozdr boud

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linear perturbation theory - special Kosmologia session 16-17.40 Thur 21 Feb
by Boud Roukema 22 Feb '13

22 Feb '13

witam cosmo-torun Tomorrow Thursday 21 Feb from 16.00 @KRA, Jan will give a talk on linear perturbation theory in cosmology. This is officially Jan's exam for the Kosmologia course, but scientifically it should be interesting for everyone in the cosmology group, especially Zbyszek and Maciej S. Galaxies exist: we need to understand how to quantitatively, statistically model their existence in a relativistic universe model - but this talk will mostly focus on the standard (Newtonian cosmology) approach. pozdr boud _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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inhomogeneous workshop: BKS Tues 18 Dec 12:30-15:30 @KRA
by Boud Roukema 17 Dec '12

17 Dec '12

hi everyone Inhomogeneous workshop Tues 18 Dec 12:30-15:30 @KRA. This is mainly for people directly working on inhomogeneous cosmo topics, but others are welcome to come along and participate in part of the discussions - you don't have to stay for the full session! Main topic: work/talk through BKS: http://cdsads.u-strasbg.fr/abs/2000PhRvD..62d3525B see you tomorrow boud _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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The Bohdan Paczynski Memorial Colloquium (fwd) - pierwszy wykład 16.11.2012 (fwd)
by Boud Roukema 07 Nov '12

07 Nov '12

> Szanowni Panstwo, > > Centrum Astronomiczne im. M. Kopernika PAN w Warszawie otwiera serię wykładów "The Bohdan Paczyński Memorial Colloquium". > Szczegoly na stronie: www.camk.edu.pl/PaczynskiColloquium > > Zapraszamy na pierwszy wykład, który odbędzie się 16 listopada o 15:00, > w Warszawie, ul. Bartycka 18: > > Rashid Sunyaev > > Max-Planck Institute for Astrophysics, Space Research Institute, Moscow, > Institute for Advanced Study, Princeton > > Hot Intergalactic Gas in Clusters of Galaxies,Cosmic Microwave Background Radiation and Cosmology > > Marek Abramowicz > Joanna Mikolajewska > > -------------------------------------------------------------------- > Prof. Joanna Mikolajewska Phone: +48 22 3296134 > N. Copernicus Astronomical Center Fax: +48 22 8410046 > Bartycka 18 E-mail: mikolaj camk.edu.pl > 00-716 Warszawa, Poland Web: www.camk.edu.pl > -------------------------------------------------------------------- _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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The Bohdan Paczynski Memorial Colloquium (fwd) - pierwszy wykład 16.11.2012
by Paweł Grochowalski 06 Nov '12

06 Nov '12

Szanowni Panstwo, Centrum Astronomiczne im. M. Kopernika PAN w Warszawie otwiera serię wykładów "The Bohdan Paczyński Memorial Colloquium". Szczegoly na stronie: www.camk.edu.pl/PaczynskiColloquium Zapraszamy na pierwszy wykład, który odbędzie się 16 listopada o 15:00, w Warszawie, ul. Bartycka 18: *Rashid Sunyaev* Max-Planck Institute for Astrophysics, Space Research Institute, Moscow, Institute for Advanced Study, Princeton *Hot Intergalactic Gas in Clusters of Galaxies,Cosmic Microwave Background Radiation and Cosmology* Marek Abramowicz Joanna Mikolajewska -------------------------------------------------------------------- Prof. Joanna Mikolajewska Phone: +48 22 3296134 N. Copernicus Astronomical Center Fax: +48 22 8410046 Bartycka 18 E-mail: mikolaj(a)camk.edu.pl 00-716 Warszawa, Poland Web: www.camk.edu.pl -------------------------------------------------------------------- _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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Newtonian N-body wrong in EdS relativistic 2nd order perturbation theory above 10 Mpc
by Boud Roukema 04 Nov '12

04 Nov '12

hi everyone http://arxiv.org/abs/1207.2035 Newtonian versus relativistic cosmology Authors: Samuel F. Flender, Dominik J. Schwarz Abstract: We show how the relativistic matter and velocity power spectra behave in different gauges. We construct a new gauge where both spectra coincide with Newtonian theory on all scales. However, in this gauge there are geometric quantities present which do not exist in Newtonian theory, for example the local variation of the Hubble parameter. Comparing this quantity to second order Newtonian quantities, we find that Newtonian theory is wrong on scales larger than 10 Mpc. This undermines the reliability of Newtonian cosmological N-body simulations on these scales. What's surprising is that this is still only *perturbation* theory, it's not fully relativistic, if I understand the paper correctly. Fully relativistic calculations still remain to be done. pozdr boud _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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A spiral galaxy at z=2.18
by Andrzej Marecki 20 Jul '12

20 Jul '12

Can a grand-design *spiral* galaxy be located at a redshift z=2.18? Yes it can! http://www.nature.com/nature/journal/v487/n7407/full/nature11256.html -- am _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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cosmo-discussion 14:30 Fri 13 May @KRA - Narlikar visit
by Boud Roukema 19 Apr '12

19 Apr '12

hi cosmo-torun, For people who are at KRA tomorrow afternoon, i propose a brief discussion - 14:30 Fri 13 May @KRA - about suggestions/preferences for a seminar and/or workshop during Jayant Narlikar's visit to Toruń during late May. pozdr boud PS: Coming up for Fri 20 May: Karolina on reionisation.

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11:00 Mon 28 May 2012: Narlikar - Highlights of an alternative cosmology
by Boud Roukema 16 Apr '12

16 Apr '12

hi cosmo-torun, Here are the details of Jayant's seminar: Title: Highlights of an alternative cosmology Speaker: Jayant Narlikar [1] Abstract: (tbd) Time/date: 11:00 Monday 28 May 2012 Place: KRA, Torun Centre for Astronomy [2] [1] http://www.iucaa.ernet.in/~jvn [2] http://www.astro.umk.pl/?lang=en cheers boud

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ok
by ostjan＠stud.umk.pl 22 Mar '12

22 Mar '12

fine with me

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cosmo books [was: Re: Fw: Kosmos]
by Boud Roukema 22 Mar '12

22 Mar '12

witam cosmo-torun On Thu, 22 Mar 2012, Biblioteka CA UMK wrote: > Mam prosbe o popatrzenie na zalacznik - czy taka ksiazka-album o Kosmosie > znajdzie wsrod Panstwa czytelnikow. ... >> W nawiazaniu do rozmowy telefonicznej przesyłam w załączniku dodatkowe >> informacje na temat wspaniałego albumu Gilesa Sparrowa - KOSMOS. >> Zapraszam na www.kmktychy.pl Talking about the "edge of space" in an abstract to a popular astronomy+cosmology book http://www.amazon.com/Cosmos-Giles-Sparrow/dp/1905204299 seems like a bad pedagogical strategy to me. We need to understand the observer's point of view, but our standard model is based on an underlying spacetime (pseudo-4-manifold + metric that solve the Einstein equations), not just a past time cone. It might be nice as a "coffee table book" - it's motivational to see big beautiful pictures. On the other hand with a small (zero) budget, i would tend to go for research/teaching-level books. At the moment we have three books listed on our wiki - please anyone update the wiki page: http://cosmo.torun.pl/foswiki/bin/view/Cosmo/BibliotekaCosmo what we want * Padmanabhan, 1993 Structure Formation in the Universe * Schilpp 1949 Albert Einstein: philosopher-scientist * Bolejko et al 2009 Structures in the Universe by Exact Methods Schilpp 1949 has the Infeld cosmic topology comment about electromagnetism - apparently the first person to talk about physical "effects" of cosmic topology. pozdr boud

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kashlinsky large-scale flow
by Boud Roukema 16 Mar '12

16 Mar '12

hi cosmo-torun, During today's Sprawozdanie, Bronek asked about the Kashlinsky large-scale high-velocity flow. You'll find Kashlinky's work referred to in the paper below, which is an interesting observational analysis according to which the flow is due to using an incorrect choice of the comoving coordinate reference frame. Wiltshire et al's argument is based on Wiltshire's approach to modelling the Universe in a more relativistically correct way than the FLRW ("standard") metric, i.e. one of the "inhomogeneous" approaches to cosmology (according to which the Earth is assumed to exist). http://arxiv.org/abs/1201.5371 Hubble flow variance and the cosmic rest frame Authors: David L. Wiltshire, Peter R. Smale, Teppo Mattsson, Richard Watkins pozdr boud

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cosmo workshop Fri 2 March @15.00 @KRA: Jan Ostrowski on Cactus: numerical relativity
by Boud Roukema 02 Mar '12

02 Mar '12

hi cosmo-torun Cactus: numerical relativity cosmo workshop Fri 2 March @15.00 @KRA Jan Ostrowski Jan is doing very interesting work in finding out how to do numerical relativity. One way of saying it is the following: "Normal" cosmological N-body simulations consist of *Newtonian* gravity simulated on a highly simplified (perfectly homogeneous) relativistic "background". In formal scientific language, this is called a "heuristic" approach; in informal language, it's called "a fudge" - it's a mathematical shortcut that seems like it should work and lets us quickly compare some sort of "model" to observations instead of waiting 50 years for the mathematics to be solved. In principle, every scientist using the heuristic/fudge is aware of this. Pure theory is very difficult to apply to the real world. Relativistic cosmological simulations should be "directly" relativistic, consistent with the Einstein equations, without using the heuristic/fudge of adding "perturbations" that obey Newtonian gravity to a relativistic "background". So these simulations can be called "background-free". How can we do background-free cosmology simulations? Jan will present a discussion on this. pozdr boud

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grey extinction
by Boud Roukema 27 Feb '12

27 Feb '12

Witam After this morning's seminar, here seem to be a few articles on grey extinction and the \ddot{a}/a > 0 interpretation of the SNe Ia experiments: http://arxiv.org/abs/0909.0231 Grey Milky Way Extinction from SDSS Stellar Photometry Authors: Evgeny Gorbikov, Noah Brosch http://arxiv.org/abs/astro-ph/0701259 Redshift-distance relations from type Ia supernova observations. New constraints on grey dust models Authors: A.R. Robaina, J. Cepa http://arxiv.org/abs/astro-ph/0603833 The Impact of Cosmic Dust on Supernova Cosmology Authors: Pier Stefano Corasaniti http://arxiv.org/abs/astro-ph/0505446 No evidence of "gray" dust from composite quasar spectra Authors: Chris J. Willott http://arxiv.org/abs/astro-ph/0410501 Limiting the dimming of distant type Ia supernovae Authors: Linda Ostman, Edvard Mortsell http://arxiv.org/abs/astro-ph/0306459 Extinction by grey dust in the intergalactic medium Authors: Ernst Fischer pozdr boud

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Maciej Bilicki 2MASS talk Thurs 10.00 g @CAMK
by Boud Roukema 24 Jan '12

24 Jan '12

hi cosmo-torun, i don't if everyone got this: http://www.ncac.torun.pl/?lang=pl&branch=world&id=3#najblizsze 2012-01-26 mgr Maciej Bilicki (CAMK Warszawa) Kosmologia z przeglądem 2MASS Seminaria Czwartkowe mają miejsce w kamieniczce Centrum Astronomicznego im. M. Kopernika PAN w Toruniu (ul. Rabiańska 8), w sali seminaryjnej. Rozpoczynają się o godzinie 10:15. Seminaria odbywają się w języku polskim bądź angielskim i trwają około 45 minut. Zagadnienia poruszane obejmują szeroki zakres astronomii, astrofizyki, kosmologii oraz fizyki. Z tego względu, Seminaria Czwartkowe są polecane m.in. studentom astronomii i fizyki. Kawa, herbata i pączki są serwowane o godz. 10:00. pozdr boud

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Higgs boson excluded at 2 sigma by ATLAS: arXiv:1112.2577
by Boud Roukema 13 Dec '11

13 Dec '11

hi cosmo-torun The mainstream media say that a seminar will take place this afternoon at CERN for the ATLAS and CMS groups. This seems to be the ATLAS paper. Can anyone find the CMS paper? http://arxiv.org/abs/1112.2577 Search for the Higgs boson in the H->WW(*)->lvlv decay channel in pp collisions at sqrt{s} = 7 TeV with the ATLAS detector Authors: ATLAS Collaboration (Submitted on 12 Dec 2011) Abstract: A search for the Higgs boson has been performed in the H->WW->lvlv channel (l=e/mu) with an integrated luminosity of 2.05/fb of pp collisions at sqrt{s} = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. No significant excess of events over the expected background is observed and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 110<mH<300 GeV. The observations exclude the presence of a Standard Model Higgs boson with a mass 145<mH<206 GeV at 95% confidence level. pozdr boud

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cosmic topology workshop 14-15.00 Fri 9 Dec: Zbyszek Bulinski
by Boud Roukema 09 Dec '11

09 Dec '11

witam cosmo-torun Cosmic topology workshop 14-15.00 Fri 9 Dec @KRA: Zbyszek Bulinski. Since this list is public, i won't give details of Zbyszek's topic - this work is so far unpublished ;). This is meant to be informal, interactive, it may become a practical "do stuff" workshop - we'll see. Sebastian's "young students" are visiting KRA this week and Marian apparently has a lecture/pracownia on Friday afternoon, so i don't yet know if we'll have the main seminar room or the one next to the guest rooms. Hoping to see many of the cosmology group together on Friday. :) pozdr boud

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festiwal nauki i sztuki april 2012 - deadline Mon 21 nov
by Boud Roukema 18 Nov '11

18 Nov '11

hi everyone, If anyone other than Tomek and Jan are interested, please add your name and edit and improve the proposal: http://cosmo.torun.pl/foswiki/bin/view/Cosmo/FestiwalNauki2012 pozdr boud

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NVSS velocity dipole 4 times bigger than CMB velocity dipole, but same direction
by Boud Roukema 31 Oct '11

31 Oct '11

hi cosmo-torun There's a very interesting paper by Ashok Singal from Ahmedabad: Large peculiar motion of the solar system from the dipole anisotropy in sky brightness due to distant radio sources Authors: Ashok K. Singal http://arxiv.org/abs/1110.6260 The principle and method are essentially straightforward, the data set is public and the analysis looks simple. The result is that the NVSS velocity dipole for faint radio sources is 4 times bigger than the CMB velocity dipole, but in about the same direction. My speculation is that somewhere there was a multiplication by two instead of dividing by two, but i didn't find it from a quick browse through the paper. If there is no error, then this sounds like a rather huge, large-scale bulk velocity. pozdr boud

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invisible Invisible Universe proceedings...
by Boud Roukema 21 Sep '11

21 Sep '11

hi cosmo-torun, Does someone have my physical copy of the Invisible Universe conference (UNESCO/Paris) proceedings? I seem to remember that someone borrowed it but i don't remember who. The Invisible Universe has become... invisible. :P Please let me know if you have it. pozdr boud

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Lustrzany dwunasto'scian foremny jako analogia przestrzeni dwunasto'sciennej Poincar'e
by Boud Roukema 26 Aug '11

26 Aug '11

Witam Złączany jest propozycja grupa kosmo dla visiting centre, w formacie odt i pdf. Dodawałem nazwe ludzi, którze dali konkretne pomysły i poprawki. pozdr boud

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visiting centre cosmo proposal
by Boud Roukema 24 Aug '11

24 Aug '11

hi cosmo-torun, We have just two and a half days left to propose a cosmology hands-on project for the proposed TCfA visiting centre. IMHO a mirror-lined dodecahedron is a relatively easy to construct possibility and gives visitors something of a concrete intuitive example of a multiply connected space (despite the problems in the analogy): Please update the wiki directly: http://cosmo.torun.pl/foswiki/bin/view/Cosmo/TCfAVisitingCentre pozdr boud

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admin: iuventus-plus for people <= 35 yrs old
by Boud Roukema 26 Jul '11

26 Jul '11

witam For people <= 35 yrs old, there's a funding program called "iuventus-plus": http://www.nauka.gov.pl/ministerstwo/inicjatywy-ministerstwa/programy-minis… Can someone see where the deadline for applying is? Please reply *publicly* if you do, since it's useful info for most of the young Torun cosmologists. More grant info (update if needed): http://cosmo.torun.pl/Cosmo/AdminGranty pozdr boud

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CAMK workshop this week: 12-17 lipca 2011: Cosmic web morphology and topology
by Boud Roukema 11 Jul '11

11 Jul '11

hi cosmo-torun, There's a CAMK workshop *this* week: 12-17 July 2011: Cosmic web morphology and topology http://users.camk.edu.pl/pchela/workshop/ Here, "topology" means 2D topology of constant density surfaces embeded in 3D space, not 3D topology of 3D spaces. This is about the cosmic web, meaning the filaments and knots of mostly dark matter and some baryonic matter on scales of about 10-100 Mpc. Most of you have seen the animation of a simulation of this that i show fairly often. Observations of the cosmic web include clusters at the "knots" of the web (e.g. observed by OCRA through the SZ effect) and the Lyman-alpha forest - clouds of neutral hydrogen that absorb background quasars. i don't expect any problem with informal participation, but send an email to Wojtek Hellwing (see the website) to briefly introduce yourself. You can make a day trip to Warsaw - leave early morning and return e.g. with the 18.45+(n>1 * 10 minutes) train - or stay overnight at a friend's place and see several days of talks. The talks look mostly (but not only) theoretical to me, and based on the FLRW model + perturbations, not the inhomogeneous approach. This is an easy opportunity to meet some international extragalacticians/cosmologists. pozdr boud

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n-body review 1106.1082v1, correction by Adrian Melott 1105.1774
by Boud Roukema 11 May '11

11 May '11

hi cosmo-torun, These two articles may be useful especially for Zbyszek and Bartek: * n-body review http://arxiv.org/abs/1106.1082v1 Dehnen and Read * correction by Adrian Melott http://arxiv.org/abs/1105.1774 i'm not sure if there's anything especially new in 1106.1082, but figs 5 and 6 look nice, and reading a review paper you can often find something you didn't know before. pozdr boud

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kpc-scale triple AGN: arXiv:1104.3391 Liu, Shen, Strauss
by Boud Roukema 22 Apr '11

22 Apr '11

witam cosmo-torun This should be interesting especially for AGN people: http://arxiv.org/abs/1104.3391 Cosmic Train Wreck by Massive Black Holes: Discovery of a kpc-Scale Triple Active Galactic Nucleus Authors: Xin Liu, Yue Shen, Michael A. Strauss pozdr boud

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fitting LT models to data: new Bolejko et al paper arXiv:1102.3370
by Boud Roukema 22 Feb '11

22 Feb '11

hi cosmo-torun http://arxiv.org/abs/1102.3370 The Metric of the Cosmos from Luminosity and Age Data Krzysztof Bolejko, Charles Hellaby, Alnadhief H. A. Alfedeel This is an algorithm for using LT models to construct a metric from apparent magnitude and maximum stellar age data (as an alternative to forcing an FLRW model onto the data). Graphs of estimates of Omega_m(r) and t_Bang(r) are in Figs 7 and 8. pozdr boud

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Bolejko arxiv:1101.3338
by Boud Roukema 19 Jan '11

19 Jan '11

hi everyone, A different problem in using a more accurate metric than the FLRW metric is how we interpret the CMB. The following seems to be the first paper on this. Since "real" calculations are difficult, the approach seems to be to test various toy model calculations that at least show how much things could change compared to FLRW + Concordance parameter values. The answer in this case is not Omega_Lambda = 0, but since these are toy models, i don't think this is a claim that Omega_Lambda != 0. What Krzysztof does argue is that \Delta \Omega_\Lambda_{\mathrm{sys}} \gg 0.01. The effect of inhomogeneities on the distance to the last scattering surface and the accuracy of the CMB analysis - Krzysztof Bolejko http://arxiv.org/abs/1101.3338 pozdr boud

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the Universe is old and old age caught up with Allan Sandage :(
by Boud Roukema 19 Nov '10

19 Nov '10

hi everyone, I think I heard at least one conference talk by Sandage. Some of the more senior people here may have known him better. I'll just quote the Wikipedia summary for the younger people among us: Allan Rex Sandage (born June 18, 1926 in Iowa City, Iowa, died November 13, 2010) was an American astronomer. He was Staff Member Emeritus with the Carnegie Observatories in Pasadena, California. He is best known for determining the first reasonably accurate value for the Hubble constant and the age of the universe. http://en.wikipedia.org/wiki/Allan_Sandage pozdr boud

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a fourth neutrino (sterile neutrino)?
by Boud Roukema 05 Nov '10

05 Nov '10

hi everyone, Even if the electron, tau and muon neutrinos are usually considered to be of too low mass to be relevant for non-baryonic dark matter, it looks like there are several hints that a fourth, "sterile" neutrino exists: http://cosmocoffee.info/viewtopic.php?p=4864 It's not clear to me what this could/would imply for the sterile neutrino's mass... pozdr boud

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highest spectroscopically confirmed redshift: z = 8.6 Lehnert et al. 1010.4312
by Boud Roukema 25 Oct '10

25 Oct '10

hi everyone, We're still a long way from galaxy/qso redshifts of 20 to 30, but we're getting towards 10: Spectroscopic confirmation of a galaxy at redshift z=8.6 Lehnert et al. http://arxiv.org/abs/1010.4312 By comparing to other high z galaxies, the stellar age is suggested to be in the range 0.01 to 0.1 Gyr. pozdr boud

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arXiv:1010.1634 neural-network removal of WMAP foregrounds
by Boud Roukema 11 Oct '10

11 Oct '10

hi cosmo-torun, Foreground removal from WMAP 5yr temperature maps using an MLP neural network Authors: H. U. Norgaard - Nielsen http://arxiv.org/abs/1010.1634 This looks cool! i've just read it very briefly... My initial understanding is that it's like an ILC map but without the arbitrary definition of "regions". pozdr boud

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14.00 Fri 8.10.10 cosmo group web pages workshop
by Boud Roukema 06 Oct '10

06 Oct '10

hi everyone, Cosmo workshop! This Friday: When, where: 14.00 Fri 8.10.2010, @KRA. Topic: cosmology group web pages. i'll try to set up a switch so that people with laptops can edit simultaneously, but anybody is still welcome to participate without a laptop. Just by seeing people edit "live" may help you get the basic idea. At 15.00, following the wiki workshop and a short break, there'll be a cosmic topology workshop. pozdr boud

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cosmo workshop Fri 15:00 12.03.2010: Li and Liu arXiv:1003.1073: WMAP quadrupole = antenna direction interpolation error
by Boud Roukema 02 Aug '10

02 Aug '10

witam cosmo-torun Cosmo workshop WHEN: Fri 15:00 12.03.2010 WHO: boud TITLE: Liu and Li arXiv:1003.1073 ("The origin of the WMAP quadrupole") ABSTRACT: The WMAP quadrupole is apparently mostly a pointing error. The true quadrupole is much closer to zero. The missing fluctuations problem has just got much worse for the infinite-flat-universe hypothesis. Liu and Li arXiv:1003.1073 ("The origin of the WMAP quadrupole") have posted a very interesting article (presumably submitted to Nature, guessing from the style and length). The best estimate of the CMB quadrupole is apparently... zero! They claim that the WMAP quadrupole comes from a single error - an antenna direction representation error by half of an observational angular interval. The discussion concerns quaternions, but don't be frightened - it presumably uses the imaginary part only, to represent X, Y, Z directions. You can think of them as vectors in R^3 if you like. Order of magnitude check of their calculation: Liu and Li say that the error is by 7' and that this causes incorrect subtraction of the dipole in the time-ordered-date (TOD). The direction of the error varies as the direction of observation varies, so it's reasonable that it doesn't give a simple offset detectable by post-processing in the analysis pipeline, IMHO (though Bartek may have another opinion). The dipole is about 3.3mK (e.g. section 7 Bennett et al 2003). sin(7') * 3.3mK = 0.002 * 3.3mK = 6.7 microK Liu and Li say 10-20 microK, just slightly higher, but their Eq.(1) is a motivational equation - it is not used as an entry to their data analysis pipeline. Figures 1 and 2 should the effect very dramatically. Rephrasing what they've said: Figure 1 left: difference between Liu Li analysis, using the same wrong method that the WMAP team used. This is a check that their pipeline does the same thing that the WMAP team does. |Difference| < 2 or so microK. Figure 1 right: Liu Li using correct antenna directions on WMAP Q1 3yr data. They get a strong quadrupole! Figure 2 left: The effect of using a wrong dipole, calculated using *only the directional information* from the time-ordered-data from the spacecraft, with *no CMB data*. See paragraph 2, page 4: "only the spacecraft attitude information is used to compute d' ." Figure 2 right: official WMAP5 V+W quadrupole. Figures 1 right, and 2 left look very, very similar to Figure 2 right. There seems to be a slight difference in angular position visible by eye, but the coincidence is striking. Can we really believe that the CMB quadrupole just by chance happens to be very strongly aligned with and of nearly identical amplitude to a map made using only the time-ordered-data of the spacecraft direction ("attitude") and the spacecraft orbit around the Sun, and the Sun's motion with respect to the CMB? Since this is a Nature-type article, the authors are forced to exclude almost all interesting details from the article, but info like the spacecraft attitude quaternions and interpolation method should not be too difficult to find. * Bennett et al 2003: arXiv:astro-ph/0302207 http://arXiv.org/abs/astro-ph/0302207 * Liu, Li 2010: arXiv:1003.1073 http://arXiv.org/abs/1003.1073 The good thing about this is that it shows that a lot of very intelligent people - those in a mega-collaboration plus many outside of the official group - can spend 7 years looking closely at an important set of observational data without finding what appears to be a very elementary error in the analysis details, with a very fundamental consequence. The fundamental consequence is that a lower quadrupole makes Infeld's (1949) prediction of the equivalent of the low l cutoff due to the shape of the Universe even stronger! Liu & Li suggest an inflationary argument, but their interpretation is not what is important - they don't want the referee to make a fuss about interpretations, since their observational argument is so strong. pozdr boud

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cosmo wiki workshop tomorrow Fri 15.00! let's reorganise our wiki...
by Boud Roukema 01 Jul '10

01 Jul '10

hi everyone, Fri 2 July 15.00 @KRA - cosmo wiki workshop let's reorganise the wiki: http://cosmo.torun.pl/cosmo/ and the home page http://adjani.astro.uni.torun.pl Bartek has done a nice job of setting up a draft of the new KRA web pages, with a nice link to the cosmology pages. So now it's time for the rest of us (starting with me!) to help do some reorganisation. i'll start today, and i propose that we (finally) get back to our workshops by starting with a wiki workshop tomorrow. My idea is that probably i will do the "main" editing, with the pages shown in the projector, so that we can have a general discussion what should go where, while i edit. But if other people bring laptops, then they can also edit (e.g. other pages) and/or take over the use of the projector and we'll see if we can converge by using both wiki + face-to-face communication. i'll see if we can get hold of a switch (should be doable) so that if more people bring along laptops, then we can together do some reorganisation. By the nature of wiki, this means that some of the editing can be done in parallel. pozdr boud

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cosmo meetings northern summer 2010
by Boud Roukema 15 Jun '10

15 Jun '10

Witam cosmo-torun, As usual, there are many cosmo meetings in Europe this northern summer. :) This is slightly edited from two French cosmo/extragalactic mailing lists messages. pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 29 Mar 2010 09:36:20 +0200 > Subject: Diffusion PNCG - mess n° 23 (fwd) > Date: Wed, 19 May 2010 18:59:46 +0200 > Subject: Diffusion PNCG - mess n° 25 1. X?me école de cosmologie 5 - 10 July 2010 in Cargese, Corsica http://www.cpt.univ-mrs.fr/~cosmo/EC2010/EcoleLuminy10.html 2. symposium ?Fundamental Frontiers of Physics" 6 to 9 July, 2010, Paris http://ffp11.gie.im 3. The 14th Paris Cosmology Colloquium 2010 - Chalonge Thursday 22, Friday 23 and Saturday 24 JULY 2010 http://chalonge.obspm.fr/colloque2010.html 4. 35th International Conference on High Energy Physics 22 - 28 July, Paris. http://www.ichep2010.fr/ 5. 8th International Conference on Identification of Dark Matter Montpellier, July 26-30th 2010. http://www.lpta.univ-montp2.fr/idm2010 6. New Directions in Modern Cosmology from 27 Sep 2010 through 1 Oct 2010 http://www.lc.leidenuniv.nl/lc/web/2010/412/info.php3?wsid=412 ----------------------------------------------------------------------- 1. X?me école de cosmologie Nous avons le plaisir de vous annoncer la tenue de la dixi?me école de cosmologie intitulée "Le fond diffus cosmologique ? haute résolution angulaire". Elle se déroulera la semaine du 5 au 10 juillet 2010 ? l'IESC (Carg?se). Avec le lancement réussi du satellite Planck, une nouvelle fen?tre d'?observation s?ouvre en cosmologie. L'objectif scientifique de cette école est de montrer comment cette nouvelle génération de données va permettre la recherche de signatures nouvelles caractérisant les mod?les d'univers primordial. Il ne s?agira pas de traiter les données de Planck, qui ne seront pas publiques ? cette époque, mais d?'explorer les avancés théoriques et phénoménologiques. On présentera la physique du fond diffus cosmologique, en insistant en particulier sur les aspects nouveaux, les plus pertinents pour la confrontation des théories aux observations. Les cours principaux seront assurés par N. Aghanim (IAS) - J.F. Cardoso (LTCI) - A.Challinor (DAMTP) - P. Creminelli (ICTP) - E. Komatsu (TCC) - J. Lesgourgues (LAPTH) - S. Prunet (IAP) - J.-P. Uzan (IAP). Ils seront enrichis par des séminaires/cours annexes, des discussions et des débats contradictoires. siteweb : http://www.cpt.univ-mrs.fr/~cosmo/EC2010/EcoleLuminy10.html NB : Le nombre de places étant limité, les intéressés sont priés de s'y inscrire au plus vite pour que l'on puisse prévoir une logistique adéquate. Les organisateurs F. Bernardeau (CEA/DSM/IPhT) - R. Triay (CPT) - F. Vernizzi (CEA/DSM/IPhT) ----------------------------------------------------------------------- 2. symposium ?Fundamental Frontiers of Physics" The 11th annual international meeting ?Fundamental Frontiers of Physics? will take place in Paris, France from 6 to 9 July, 2010. The deadline for submission of an abstract is the 15th of June and for early registration to ?Fundamental Frontiers of Physics? is the 25th of June, 2010. The Symposium develops around five themes: 1. Big Bang Cosmology / Dark Energy 2. Dark Matter/Astroparticles 3. Particle physics and Fundamental Interactions 4. From Intrication to Quantum Information and Quantum Gas 5. Epistemology, History of Physics Parallel sessions will be organized as mini-workshops consisting mostly of twenty minutes oral presentations. Scientific Committee A. Aspect, Institut d?Optique (Palaiseau) P. Binétruy, APC, Paris Diderot University E. Brezin, ENS (Paris) F. Combes, LERMA (Obs. Paris) J. Iliopoulos, ENS ( Paris) J. Kouneiher, University of Nice/IUFM and LUTH (Obs. Paris) M. Lachi?ze-Rey, APC, Paris Diderot University J. A. Madore, University of Orsay J.-J. Szczeciniarz, HPS, Paris Diderot University Please visit the website of the conference for all relevant information http://ffp11.gie.im ----------------------------------------------------------------------- 3. The 14th Paris Cosmology Colloquium 2010 Ecole Internationale d'Astrophysique Daniel Chalonge THE STANDARD MODEL OF THE UNIVERSE: THEORY AND OBSERVATIONS George Smoot Nobel Prize of Physics and Daniel Chalonge Medal Thursday 22, Friday 23 and Saturday 24 JULY 2010 at the parisian campus of Paris Observatory (HQ), in the historic Perrault building. The Conference is within the astrofundamental physics spirit of the Chalonge School, on recent observational and theoretical progress on the CMB, Inflation, astrophysical dark matter, dark ages, dark energy, and the theory of the early universe with predictive power. In summary, the aim of the meeting is to put together real cosmological data and hard theory predictive approach connected to them in the framework of the Standard Model of the Universe. Topics: Observational and theoretical progress in the CMB, astrophysical dark matter, dark energy, dark ages . Large and small scale structure formation. Inflation in connection with the CMB and LSS data, slow roll and fast roll inflation, quadrupole suppression and initial conditions, low CMB multipoles. CMB polarization. Neutrinos in cosmology. The Meeting is open to all scientists interested in the subject. All Informations about the meeting and registration to it are displayed at : http://chalonge.obspm.fr/colloque2010.html Early Registration is strongly encouraged The format of the Meeting is intended to allow easy and fruitful mutual contact and communication. Sessions last for three full days in the beautiful parisian campus of Observatoire de Paris (built on orders from Colbert and to plans by Claude Perrault from 1667 to 1672). All sessions take place in the historic Perrault building ("Bâtiment Perrault") of Observatoire de Paris HQ, under the portraits of Laplace, Le Verrier, Lalande, Arago, Delambre and Louis XIV. An exhibition will retrace the 19 years of activity of the Chalonge School and George Smoot participation to the School along these 19 years. Informations on the previous Paris Cosmology Colloquia and of the school events are available athttp://chalonge.obspm.fr (lecturers, lists of participants, lecture pdf files and photos during the Colloquia). Chalonge.Ecole(a)obspm.fr http://chalonge.obspm.fr/ ----------------------------------------------------------------------- 4. 35th International Conference on High Energy Physics La 35?me Conférence Internationale de Physique des Hautes Energies, la plus importante au monde dans cette spécialité, aura lieu cet été en France, du 22 au 28 juillet ? Paris. A noter que les astroparticules et la cosmologie y seront largement représentées dans une session dédiée et dans les exposés pléniers. Site web : http://www.ichep2010.fr/ ----------------------------------------------------------------------- ----------------------------------------------------------------------- 5. 8th International Conference on Identification of Dark Matter This is the second circular announcing the *** 8th International Conference on Identification of Dark Matter *** that will be held in Montpellier, July 26-30th 2010. We are glad to announce that we will extend abstract submission until MAY 30th 2010 Please refer to http://www.lpta.univ-montp2.fr/idm2010 for further information on travel and accommodation, registration, payments, and abstract submission. See also at the end of this email. We encourage abstract submission from graduate students and posdoctoral fellows. We would appreciate if you could bring this announcement to their attention, and diffuse it to your scientific communities and research departments. Looking forward to seeing you in Montpellier, The local organizing committee Please feel free to contact us if you have questions regarding IDM 2010 (idm2010com(a)lpta.univ-montp2.fr). ----------------------------------------------------------------------- 6. New Directions in Modern Cosmology New Directions in Modern Cosmology from 27 Sep 2010 through 1 Oct 2010 Scientific organizers: T.M. Nieuwenhuizen, ITFA, UvA, R.E. Schild, Harvard CfA F. Sylos Labini, Enrico Fermi Center, Rome R. Durrer, Univ Geneva Aim and description This workshop concentrates on the discussion of recent cosmological observations which present challenges to the standard LCDM model. These observations include: the large scale flows, the sizes and amplitude of galaxy large scale structures, the systematic effects biasing the analysis of CMB data and the lack of large-angle correlations, the anisotropy of the Hubble flow, the evolution of galaxy size, and the failure to find the sub-halo building blocks left over from the primordial fluctuation spectrum. Last and not least, it is disturbing that in the LCDM model 95% of the Universe have not been observed 'directly'. While each of these observations can be seen as an anomaly that the model would possibly explain, the bulk of them calls for a more careful analysis of the model foundations, particularly the amount and role of dark substances. From the theoretical side it is known that the role of hydrodynamics can be more important that often assumed. Moreover recently there has been a considerable theoretical effort to develop a coherent picture in General Relativity which appropriately takes into account matter inhomogeneities. By connecting and discussing different approaches and results, this workshop, aims to advance our comprehension of the large scale universe. Progress can be hoped for by combining insights from various groups of researchers studying different observational and theoretical problems. The workshop offers a unique opportunity to discuss conceptual and methodological problems of the present cosmological paradigm. Central questions are posed from observational and theoretical perspectives: - Galaxy Structures on large scales: How large are galaxy fluctuations on 100 Mpc/h scale? Do we see the predicted anti-correlations in the two-point correlation function? - Is there a systematic problem in the CMB large angle correlations? Is there true evidence for a galaxy-CMB cross correlation? - Are large scale flows at odds with LCDM predictions? - What is the role of joint effects of gravity and hydrodynamics in the theory of structure formation? - What is the role of large density inhomogeneities in General Relativity? Which effects can be observed? We of course cannot expect to obtain answers to any of those questions during this workshop but we can discover how expertise from different fields can be combined to fruitfully address them. The diversity in the background of the participants guarantees that new questions will arise and new approaches will be formulated. The central role of the workshop will be to stimulate and coordinate this interaction. http://www.lc.leidenuniv.nl/lc/web/2010/412/info.php3?wsid=412 -----------------------------------------------------------------------

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advanced summer school on computational astrophysics at Nicolaus Copernicus University, Torun, Poland, 11-25 July 2010
by Boud Roukema 08 Mar '10

08 Mar '10

witam cosmo-torun Our colleagues in the optical group have got together with some galaxy formation people and are organising a simulation workshop this northern summer (July 2010): http://supercomputing.astri.umk.pl/ Ben Moore is one of the key people doing galaxy simulational work since a long time ago. Romain Teyssier does adaptive tree code work AFAIK - his program RAMSES is here: http://irfu.cea.fr/Projets/Site_ramses/RAMSES.html It is wolne oprogramowanie, under the CECILL licence, which is GPL-compatible under section 5.3.4 of the CECILL licence: http://www.cecill.info/licences/Licence_CeCILL_V2-fr.txt i think that many of us could be interested in participating or at least listening to a few talks. i'm sure that Michal Hanasz and the doktoranci will tell us if they prefer us to formally register or not, though of course, i'm sure there wouldn't be things like registration fees for local participants. We should think of organisers' practical side of making sure that there are enough seats or computers available, etc. but i don't expect that that would be a huge problem - e.g. eduroam access for laptops should presumably be available at the Maths building. pozdr boud

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two books for library: Schilpp/Infeld (1949); Bolejko et al (2009)
by Boud Roukema 04 Mar '10

04 Mar '10

hi Karolina, Here are two books that would be useful to buy. The first one has what seems to be the first statement of the "nothing-can-be-bigger-than-the-Universe" argument in terms of density perturbations. Apparently, the first scientist(s) to state the argument were not Starobinsky (1993) and Stevens et al (1993), but rather... a Polish physicist: Leopold Infeld in 1949! The second book synthesises recent papers on the Einstein-equation exact-solution approach to what i have repeatedly said in our cosmology group several times (and Helena is working on this :). In simple words: "the simplest explanation for dark energy may be the failure to do the maths carefully enough". (1) Albert Einstein: philosopher-scientist, edited by Paul Arthur Schilpp , 1949 (republished 1970) e.g. http://searchworks.stanford.edu/view/1066168 http://www.questia.com/library/book/albert-einstein-philosopher-scientist-b… (2) Bolejko et al 2009: Title: Structures in the Universe by Exact Methods Author: Krzysztof Bolejko, Andrzej Krasinski, Charles Hellaby, Marie-Noelle Celerier ISBN: 9780521769143 http://assets.cambridge.org/assets/bookpageresult.jsf?conversationId=1165892 The first book is apparently cheap, the second one expensive. Both would be useful IMHO. pozdr boud

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(1) workshop 15.00 Fri 20.11.2009 - another way to select comoving 3-space; (2) Festiwal 2010
by Boud Roukema 21 Jan '10

21 Jan '10

witam cosmo-torun (1) Research workshop! title: Another way to select comoving 3-space speaker: boud when/where: Friday 15.00 godz. 20.11.2009 @KRA. This topic will be different to my Monday KRA seminar. My Monday talk is about stuff on ArXiv.org and already peer-reviewed. Friday is for research-under-progress presentation/discussion - that's the idea, after all. (2) We have to announce FNiS2010 (science festival) proposals by Monday 23 Nov!!! Anyone interested in us doing something together, please speak up quickly, and we can briefly discuss it on Friday face-to-face (or tomorrow Thurs @KRA). Here's my proposal for what i'd like to talk about: http://cosmo.torun.pl/Cosmo/FestiwalNauki2010 pozdr boud

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Fwd: cosmo workshop Mike Peel - SZ sky simulations 15.00 Fri 15 Jan
by Bartosz Lew 13 Jan '10

13 Jan '10

Hi all, This is just a forward of the announcement also to Mike. I thinks it's very useful for students to see what is currently going on in CMB, Sunyaev-Zeldovich, radio point sources science - how to simulate realistic maps including these effects etc. This is gonna be a workshop type talk so every questions are welcome ! -- ================================================ Bartosz Lew Nicolaus Copernicus University, Torun Centre for Astronomy, Department of Radio Astronomy tel: +48 (56) 611 3042 email:blew@astro.uni.torun.pl, www: http://cosmos.astro.uni.torun.pl/~blew

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cosmo workshop Mike Peel - SZ sky simulations 15.00 Fri 15 Jan
by Boud Roukema 13 Jan '10

13 Jan '10

Witam This week we have a guest from Jodrell Bank for our cosmo workshop :). WHAT: SZ sky simulations WHEN: 15.00 Fri 15 Jan 2010 WHERE: KRA WHO: Mike Peel pozdr boud

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14.45 godz piatek 8 stycznia 2010, Lew@KRA: CMB cold spot; Planck first light
by Boud Roukema 07 Jan '10

07 Jan '10

hi cosmo-torun Cosmo workshop tomorrow Fri 8 Jan 2010 - a cold spot talk is just what we need in this weather... :P WHEN/WHO/WHERE: 14:45-15:45 Bartek Lew KRA WHAT: A study of the galaxy redshift distribution toward the cosmic microwave background cold spot in the Corona Borealis supercluster Genova-Santos et al. 2010 http://arxiv.org/abs/0912.5167 If there's time, i'll mention (maybe just briefly, at least) the lack of low l power in the Planck First Light publicity image: http://cosmocoffee.info/viewtopic.php?t=1479 http://arxiv.org/abs/0910.5102 Cover http://arxiv.org/abs/0911.4063 Liu & Li pozdr boud

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Moriond 2010 Cosmology (fwd)
by Boud Roukema 28 Dec '09

28 Dec '09

Moriond 2010 Cosmology Dear colleague, The next Rencontres de Moriond meeting devoted to Cosmology will be organized in La Thuile (Valle d'Aosta, Italy), March 13-20, 2008. Registration is open on http://moriond.in2p3.fr/J10/ where more details can be found (including abstract submission) The main topics covered in the conference are summarized at the end of this message looking forward to welcom you in La Thuile, with our best regards, the organizing committee ------- 1. Clusters / SZ effect Cosmology with clusters Optical detection and self calibration methods X-ray clusters Hydrodynamical simulations SZ Clusters Radio galaxies clusters 2. CMB / Polarization WMAP Planck Polarization measurements 3. Reionization / Radio Numerical simulations LOFAR: foregrounds GMRT Other projects (MWA ...) 4. Dark Energy / Dark Matter SNLS BAO / SDSS Weak lensing Cluster Mass Profile 5. Dark Matter: accelerator searches Direct search at the LHC Direct search with underground detectors Indirect seraches (Fermi / Gamma-ray astronomy) 6. Theory Modified gravity Dark energy models Primordial universe / Inflation 7. Herschel Herschel Science Demonstration Phase Initial Results --

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CDMS II: 2 events, P=23%, Fig 3 looks good and Fig 5 agrees with DAMA/LIBRA
by Boud Roukema 18 Dec '09

18 Dec '09

hi cosmo-torun, http://cdms.berkeley.edu/ http://cdms.berkeley.edu/results_summary.pdf http://cdms.berkeley.edu/0912.03592v2.pdf CDMS II: 2 events, P=23%, Fig 3 looks good and Fig 5 agrees with DAMA/LIBRA. There was big blog rumour about this - the significance is still low, but the results look cool to me. :) LDM and DAMA/LIBRA/CDMS particles will probably have to co-exist. There's a bit of discussion here: http://cosmocoffee.info/viewtopic.php?t=1487 And here's an article that totally ignores DAMA/LIBRA, presumably because DAMA/LIBRA is an Italian, not USA, experiment: http://www.sciencenews.org/view/generic/id/50960/title/Experiment_detects_p… pozdr boud

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cfalib: we should get Krasinski - Inhomogeneous Cosmological Models
by Boud Roukema 07 Dec '09

07 Dec '09

Hi Karolina, Could we please put: Inhomogeneous Cosmological Models Andrzej Krasinski Cambridge University Press 1997 ISBN 978-0521481809 on our list of priority books whenever there's some budget money that needs to be spent? (Sometimes at the end of the year there is money that will be lost if it doesn't get spent.) It seems we don't have this book anywhere in the UMK library system. The Universe is certainly inhomogeneous - UMK would not exist if the Universe were perfectly homogeneous (since LSS and galaxies and planets would not exist). The question is not *if* the Universe is inhomogeneous, the question is *how important* the inhomogeneity is, i.e. to what degree assuming a perfectly homogeneous model and then adding perturbations is a good enough approximation to reality. pozdr boud

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textbook by Paddy: "Gravitation" (CUP)
by Boud Roukema 13 Nov '09

13 Nov '09

hi Cfalib, cosmo-torun, i think that Cfalib should order Paddy's new book on gravitation for our library, depending on when there's money available. Often at the end of the year there's budget money that needs to be spent, and the book doesn't seem very expensive anyway (though "c." probably means "circa" = $\sim$, which maybe means they'll increase the price if the book gets good reviews or if people pre-order it?). See the summary at GRTOC.pdf - link below. Any thoughts? pozdr boud > Gravitation: Foundations and Frontiers > T. Padmanabhan > > [To be published by Cambridge University Press, January 2010.] > > The book can be ordered from this site: > http://www.cambridge.org/uk/catalogue/catalogue.asp?isbn=9780521882231 > > DESCRIPTION: > > This is a comprehensive advanced level textbook on Gravitation. The front > matter (table of contents etc.) is available as a pdf file here: > > http://www.iucaa.ernet.in/~paddy/books/GRTOC.pdf > > Covering all aspects of gravitation in a contemporary style, this advanced > textbook is ideal for graduate students and researchers in all areas of > theoretical physics. The 'Foundation' section develops the formalism in six > chapters, and uses it in the next four chapters to discuss four key > applications - spherical spacetimes, black holes, gravitational waves and > cosmology. The six chapters in the 'Frontier' section describe cosmological > perturbation theory, quantum fields in curved spacetime, and the Hamiltonian > structure of general relativity, among several other advanced topics, some of > which are covered in-depth for the first time in a textbook. The modular > structure of the book allows different sections to be combined to suit a > variety of courses. Over 200 exercises are included to test and develop the > reader's understanding. There are also over 30 projects, which help readers > make the transition from the book to their own original research. > > HIGHLIGHTS: > > * Develops the formalism and uses it to discuss four key applications - > spherical spacetimes, black holes, gravitational waves and cosmology. > > * Describes several advanced topics, some of which are covered in-depth for the > first time in a textbook. > > * Different sections can be easily combined to meet the needs of a variety of > courses.

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workshop next week Fri 20.11.2009
by Boud Roukema 12 Nov '09

12 Nov '09

hi all, i forgot to announce a research workshop yesterday (2 days before Friday), so IMHO the best is to wait till Fri next week. i'll do my best to announce something by Wednesday... Any volunteers? Please volunteer directly on the list :) or at least tell me by another method. pozdr boud

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PROPOSAL: cosmo coffee workshop Fri 13:00 26.09.2009 - conference inspirations
by Boud Roukema 29 Oct '09

29 Oct '09

hi everyone, i propose one cosmo coffee research-level workshop before the semester starts: 13:00 Fri 26.09.2009 @KRA Unless there are other volunteers, i propose that we have a loose discussion based on what people find interesting from these online conference notes: http://cosmo.torun.pl/Cosmo/InvisibleUniverse2009 (done) http://cosmo.torun.pl/Cosmo/GrassmannCosmoFun2009 (to do next week) Bartek, Agnieszka, Zbyszek - if you take laptops to GrassCosmoFun or otherwise have web access during the meeting, then feel free to add to these notes. Having multiple wiki-edits of notes on a talk while it takes place could be particularly interesting... pozdr boud

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Invisible Universe meeting - random notes
by Boud Roukema 01 Jul '09

01 Jul '09

hi cosmo-torun, i'm making some notes during some of the talks at the Invisible Universe meeting. See http://cosmo.torun.pl/Cosmo/InvisibleUniverse2009 and use arXiv.org to find the related papers! pozdr boud

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some notes after today's talk - LDM
by Boud Roukema 22 May '09

22 May '09

witam cosmo-torun * circular polarisation from synchrotron processes? Kennett & Melrose, 1998, PASA, 15, 211 http://www.atnf.csiro.au/pasa/15_2/kennett/paper/node3.html > In some sources it may be that the relativistic > particles are electron-positron pairs (e.g., Wilson & > Weiler 1997). Electrons and positrons contribute with > the same sign to the linearly polarized component and > with the opposite sign to the circularly polarized > component. If the distributions of electrons and > positrons are the same the wave modes can have no > circular component and, more importantly, the intrinsic > circular polarization from the synchrotron radiation > sums to zero. So if we have different distributions of electrons and positrons, then we get a circular polarisation component. i'm sure there must be more basic texts on this subject... pozdr boud

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non-baryonic dark matter now detected at 8.2 sigma: DAMA/NaI + DAMA/LIBRA - Bernabei et al. ArXiv:0804.2741
by Boud Roukema 20 May '09

20 May '09

witam cosmo-torun, The DAMA detections of nbDM seem to be getting even stronger! Bernabei et al. ArXiv:0804.2741 now have their annual modulation signal of non-baryonic dark matter from the Galactic DM Halo detected "at 8.2 sigma CL": DAMA/NaI + DAMA/LIBRA. Figures 2, 4 and 8 are especially impressive. Savage et al. have a nice article ArXiv:0808.3607 showing the regions of parameter space for WIMPS for which are consistent with both the DAMA detection and all the non-detections in other experiments. E.g. spin-dependent, proton-only couplings for a particle mass of about 5-9 GeV are one region compatible with all the data. This doesn't stop LDM (light dark matter) *also* being a correct hypothesis for nbDM - multiple DM particles may contribute together to non-baryonic DM. pozdr boud

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cosmo talk = ? Fri 10 april && DE as a continuity condition Fri 17 April
by Boud Roukema 17 Apr '09

17 Apr '09

hi cosmo-torun, i haven't seen an announcement for a talk tomorrow (Fri 10 April), will there be one? Anyway, i propose for 16.00 Fri 17 April: Dark Energy as a spatial continuity condition (arXiv:0904.0975) Moze byc? pozdr boud

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dark energy from continuity, finiteness and homogeneity (nothing exotic)
by Boud Roukema 07 Apr '09

07 Apr '09

witam wszystkim na cosmo-torun, If space is flat and compact, then dark energy does not require any exotic explanation, it's just a stretching effect required by the assumptions of homogeneity and continuity. http://arxiv.org/abs/0904.0975 Geometry rather than exotic particle physics or modifications of gravity. Enjoy. :) pozdr boud

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Diffusion PNCG, mess. n° 6 (fwd)
by Boud Roukema 27 Mar '09

27 Mar '09

hi all some interesting announcements pozdr boud > > ---------- Forwarded message ---------- > Date: Thu, 26 Mar 2009 16:46:49 +0100 > From: Programme National de Cosmologie et Galaxies <pncg iap.fr> > To: Programme National de Cosmologie et Galaxies <pncg iap.fr> > Subject: Diffusion PNCG, mess. n° 6 > > PNCG - Message n° 6 - 26 mars 2009 > > 1. Oxford Physics Department 2 Jobs Advert > > 2. NAM/JENAM 2009 : Epoch of Reionisation Session > > 3. Blois 2009 > > 4. Santa Fe Cosmology Summer Workshop for 2009 > > 5. Summer School in Statistics for Astronomers, June 1-6, 2009 > > ----------------------------------------------------------------------- > 1. Oxford Physics Department 2 Jobs Advert > > Please visit http://www.physics.ox.ac.uk/jobs/ to view this. > > *1* Vacancy Title: Post-doctoral Researchers in OBSERVATIONAL COSMOLOGY > within Astrophysics > > Reference Number: DB09005 > > Job Description: The Department of Physics invites applications for one > or more post-doctoral positions in observational cosmology. > > The observational cosmology programme at Oxford includes: the analysis > of surveys for type Ia supernovae; analysis of large-area surveys of > weak gravitational lensing incorporating photometric redshift estimation; > and the design and implementation of upcoming redshift surveys to measure > baryonic oscillations. We especially welcome applications from candidates > interested in working on any of these projects. > > The post-holder will have the opportunity to engage in teaching for up > to 3 hours per week during term. The starting salary is from £28,839 > to £38,757 pa depending on skills and experience. A benefits package > and a research budget for travel and other expenses will be provided. > Appointments will be for two years in the first instance, extendable > to three years. Appointments would start on 1 May 2009 or later. > > Further particulars are available from > http://www.physics.ox.ac.uk/astro/jobs/ > Applicants should send a statement of research interests, > curriculum vitae, list of publications (one file only in pdf), > and the names and addresses of three referees by the closing date > of 31 March 2009, quoting reference DB09005. Email submission is > preferred. Please ensure that the reference number DB09005 is > included in the subject title. In addition candidates should arrange > for letters from the referees to be sent to sec astro.ox.ac.uk by the > closing date. Interviews are expected to be held shortly after. > > > The University is an equal opportunity employer > > > Anyone who thinks they may be interested in the job is encouraged > to talk to Vanessa Ferraro-Wood (or email: sec astro.ox.ac.yuk) about it. > > The application deadline is 31/03/2009 > > > *2* Vacancy Title: Postdoctoral Researcher in Theoretical Cosmology > (Fixed Term) within Astrophysics > > Reference Number: DB09006 > > Job Description: We invite applications for a postdoctoral research > position starting 1 October, 2009 to work in the area of Theoretical > Cosmology for one year in the first instance, with the possibility of > extending to 3 years. There will be a particular focus on cosmic > microwave background anisotropy and interpretation of data from the > Atacama Cosmology Telescope and the Planck satellite. The successful > candidate is likely to have experience in analysis of cosmological data > and be capable of initiating research in a lively group with significant > interaction between theory and observation. The candidate will work > primarily with Joanna Dunkley, but will be encouraged to interact with > other faculty members and to carry out independent research. > > Oxford Astrophysics offers a stimulating research environment, with a > large number of faculty in cosmology, including theoretical (Pedro > Ferreira, Joe Silk, Adrianne Slyz), observational (Richard Ellis, Steve > Rawlings, Isobel Hook, Lance Miller) and experimental (Mike Jones, > Ghassan Yassin, Gavin Dalton). > > > Anyone who thinks they may be interested in the job is encouraged to > talk to Dr Joanna Dunkley (or email: j.dunkley1 physics.ox.ac.uk) about > it. > > > The application deadline is 31/03/2009 > > > ----------------------------------------------------------------------- > 2. NAM/JENAM 2009 : Epoch of Reionisation Session > > As part of the 2009 UK National Astronomy Meeting & the Joint European > National Astronomy Meeting at the University of Hertfordshire > (www.jenam2009.eu), there will be a parallel session on > > "Epoch of reionisation: > first light to the earliest galaxies currently known" > > on Monday 20th April 2009. > Please see www.jenam2009.eu/default.asp?ContentID=1327 > for more information. > > We would welcome submission of abstracts for this session by the > deadline on Monday March 9th. > > Registration and abstract submission is available at > www.jenam2009.eu/cmsapps/jenam_conference_reg/ > confreg2.asp?userid=0&confid=4&contentid=1329 > > ----------------------------------------------------------------------- > 3. Blois 2009 > > The XXIth Rencontres de Blois entitled "Windows on the Universe" > will be held from June 21st to June 26th, 2009 > in the Château de Blois, Loire Valley, France. > > This series, started in 1989 with the celebration of the > 25th anniversary of the discovery of CP violation, is a > high level cross disciplinary conference series which is > organized every year in May or June in the beautiful > Renaissance castle of Blois. > > This year will be the 20th anniversary of this series of > conferences; moreover, 2009 has also been tagged as the > "World year of astronomy". > To celebrate these two events, 7 Nobel laureates : J.Cronin, > R. Giacconi, D. Gross, M. Perl, G. Smoot, J. Steinberger, > J. Taylor and many other well known scientists have accepted > our invitation to attend and give a lecture. > > Registration and abstract submission for parallel session talks > are open at http://blois.in2p3.fr > > ----------------------------------------------------------------------- > 4. Santa Fe Cosmology Summer Workshop for 2009 > > The next of our continuing series of Santa Fe Cosmology Summer workshops > will be held in Santa Fe, New Mexico from July 6 to July 24, 2009. > The workshop series is sponsored by Los Alamos National Laboratory and > by the Kavli Institute for Cosmological Physics at the University of > Chicago. The venue is the campus of St. John's College, a small liberal > arts college that provides both a pleasant ambiance and convenient access > to Santa Fe. > > The aim of the Santa Fe workshops is to bring together physicists and > astrophysicists with interests in structure formation, the cosmic > microwave background, and the early universe. Typically, a large > portion of the time is devoted to discussion, with formal or informal > talks as needed to introduce such discussion. Attendance is limited > to about 80 participants to encourage this informality. We also > encourage attendance by a number of graduate students and junior > researchers, so they can be exposed to forefront research and interact > with leaders in the field. We therefore ask you to bring this meeting > to the attention of exceptional students and postdocs. > > This year, the first two weeks will follow our standard workshop > format, while the third week will be a focused workshop on weak > lensing. Details on third week activities will be available shortly. > > There will be no registration fee and highly subsidized housing will > be provided (the precise cost estimates will be available soon, but > are typically $150/week, less for students). Travel support will not > be available. > > To register for the meeting and to make suggestions for the scientific > program, go to the Workshop website at > > http://www.lanl.gov/projects/cosmology/sf09/ > > We will be filling spaces on a rolling basis, so you are strongly > advised to register as soon as possible, and preference will be given > to those who register before April 08, 2009. > > ----------------------------------------------------------------------- > 5. Summer School in Statistics for Astronomers, June 1-6, 2009 > > First Announcement > > Summer School in Statistics for Astronomers V > June 1-6, 2009 > Penn State University > http://astrostatistics.psu.edu/su09/ > > The fifth annual Penn State Summer School in Statistics for > Astronomers will be held at Penn State. This is a 6-day course > in fundamental statistical inference designed to provide > physical scientists, particularly young researchers in astronomy, > with a strong conceptual foundation in modern statistics and to > develop a repertoire of well-established techniques applicable > to observational astronomy. Classroom instruction is interspersed > with hands-on analysis of astronomical data using the public-domain > R software package. The course is taught by a team of statistics > and astronomy professors with opportunity for discussion of > methodological issues. > > Statistical techniques covered include: > > * exploratory data analysis > * hypothesis testing and parameter estimation > * regression & confidence interval estimation > * model selection & goodness-of-fit > * maximum likelihood methods & Bayes' Theorem > * non-parametric methods > * Monte Carlo methods > * Poisson processes > * time series analysis > > INTERESTED PARTICIPANTS SHOULD REGISTER AT > http://astrostatistics.psu.edu/su09/reg.html > REGISTRATION DEADLINE: May 1, 2009 > (or when the enrollment limit reaches) > REGISTRATION FEE: $250. > > The 2009 Summer School is organized by Penn State University's > Center for Astrostatistics. It will be modeled on the last four Penn > State Summer Schools and the 2008 Indian Institute of Astrophysics- > Penn State Summer School. See http://astrostatistics.psu.edu/ > for past lecture notes. This Web site > http://astrostatistics.psu.edu/su09/ > also gives information on travel, lodging, and visas. >

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cosmo workshop wt 14:00 20.01.09 B Lew: 'A high significance foreground non-Gaussian signal ?'
by Boud Roukema 25 Feb '09

25 Feb '09

witam, Cosmo workshop tomorrow wtorek 20.01.09 at 14:00 @KRA. Bartek Lew will talk about his present project: 'A high significance foreground non-Gaussian signal ?' Everyone is welcome, but be warned: this is a research level work session, most likely in English. pozdr boud

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200-bit precision floating point arithmetic and trigonometry?
by Boud Roukema 03 Feb '09

03 Feb '09

hi cosmo-torun, This follows from a conversation some of us had recently. Debian stable (etch) includes GMP and MPFR - i ran a test program which quite nicely does e.g. 200-bit floating point operations, including trig functions, and gets reasonable answers. :) Source + doc: http://gmplib.org/ http://www.mpfr.org/ These are both under the LGPL instead of the GPL, so it turns out that... the non-free program Mathematica uses the free program GMP ! So apparently non-free software libraries are not good enough for Mathematica for this purpose. Or Mathematica is just "abusing the commons". [the commons: http://en.wikipedia.org/wiki/The_commons ] pozdr boud On Wed, 14 Jan 2009, Bartosz Lew wrote: >>> But within standard types long double is better than double etc. >> >> i assume this means you've experimented with this? Based on the >> wikipedia entries, i suggested to Zbyszek that this could be >> interesting, but i haven't tried it. My understanding is that it >> pushes to the limit of the machine you're using, which can be better >> than 64bit, but is nowhere near 128bit. :) > > mmm, don't remember which means that probably not much. > > But, I never experienced a need for such extremely super-duper high accuracy. > As far as the calculation is actually correct within the given precision it's cool. > Eg. CMBFast works in 4byte float numbers and it's sufficient. > AFAIK people still very often use 4byte floats. > My opinion is that is the code returns wrong numbers its an indication that it should be rewritten > in smarter way rather than going to long doubles or quadruple precisions. > >> >> Tomorrow Thursday i've got linux@IF so i'm very unlikely to be at >> KRA. But that's not an argument against both of you coming here and >> doing stuff. :) > > ok. > > B. >

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Diffusion PNCG, mess. No 3 (fwd)
by Boud Roukema 30 Jan '09

30 Jan '09

witam some of these may be interesting pozdr boud ---------- Forwarded message ---------- > Date: Fri, 30 Jan 2009 16:03:39 +0100 > From: Programme National de Cosmologie et Galaxies pncg iap fr > To: Programme National de Cosmologie et Galaxies pncg iap fr > Subject: Diffusion PNCG, mess. n° 3 PNCG - Message n°3 - 30 janvier 2009 1. postdoc position at LPNHE 2. Invisible Universe International Conference 3. POSTDOCTORAL FELLOWSHIP in instrumentation at the Institut d'Astrophysique Spatiale d'Orsay (IAS) 4. Journées asa/alma (6 et 7 avril 2009 à Grenoble) : dernière annonce 5. Post-doctoral fellowship at LAM (Marseille-France) on Herschel Extragactic Key Projects ----------------------------------------------------------------------- 1. postdoc position at LPNHE The Laboratoire de Physique Nucleaire et des Hautes Energies de Paris (LPNHE, CNRS/IN2P3 and University of Paris) invites applications for a post-doctoral position in Observational Cosmology. The position is for 2 years starting on October 1st 2009, or earlier, with a possible extension of 1 year, contingent on funding. The researcher will work within the Supernova & Cosmology group of LPNHE (http://supernovae.in2p3.fr) primarily on the measurement of Dark Energy using Type Ia supernovae. The work will focus on analyzing the high-quality supernova data sets recently obtained by the Supernova Legacy Survey and the Nearby Supernova Factory projects, in which the LPNHE group is strongly involved, as well as on the combination of these data sets with other large supernova data sets such as obtained by the SDSS-II. The candidate is expected to have a PhD in Physics or Astrophysics and expertise in data analysis (not necessary supernova cosmology) and interpretation. Applications (CV, research statement and names of 3 referees) should be sent by email to Reynald Pain (reynald.pain lpnhe in2p3 fr). Applicants should also arrange for up to three letters of reference to be sent to the same address. The closing date is February 15, 2009. ----------------------------------------------------------------------- 2. Invisible Universe International Conference The LUTh (« Universe and Theory Laboratory » - CNRS UMR 8102, Paris Observatory), in collaboration with UNESCO and several national and international institutes organizes the « Invisible Universe International Conference » in Paris (France) from June 29 to July 3, 2009 at the Palais de l?UNESCO. The conference intends to bring together all scientists working on the various aspects of dark energy, dark matter and gravity modification and their connection to cosmological observations and fundamental physics. The list of invited speakers is completed: L. Amendola (Italy), A. Ashtekar (USA), L. Bergstrom (Sweden), Ed. Bertschinger (USA), P. Binetruy* (France), F. Combes (France), A. Connes (France), Ed. Copeland (UK), G. Dvali (Switzerland), P. Fayet (France), D. Gross (USA), F. Hammer (France), S. Katsanevas (France), E. Kolb (USA), O. Le Fevre (France), Y. Mellier (France), M. Milgrom (Israel), T. Padmanabhan (India), J. Peebles (USA), J.-L. Puget (France), A. Riess (USA), G. Smoot (USA). L. Susskind (USA), E. Wright (USA). 8 parallel sessions are organized as an international workshop such that every oral presentation is expected to be about twenty-five minutes. 1) Observational Astrophysical Aspect of dark energy and dark matter 2) Experimental particle physics aspects of dark matter 3) Gravitation and cosmology 4) Inhomogeneous universe models and backreaction 5) Dark energy as a new energy component 6) Dark matter candidates 7) Dark Matter and Dark energy as modified gravity 8) Theoretical and numerical aspects of cosmic structures and evolution THE REGISTRATIONS ARE NOW OPEN, THE CONTRIBUTED TALKS ARE WELCOME. We would be very grateful if you can also disseminate widely the information among your colleagues and students. For further information, please see the following web and e-mail adresses : http://universe2009.obspm.fr meeting.univ2009 obspm fr ----------------------------------------------------------------------- 3. POSTDOCTORAL FELLOWSHIP in instrumentation at the Institut d'Astrophysique Spatiale d'Orsay (IAS) A new generation of scintillating bolometers for EURECA Contact: Pierre de Marcillac (marcillac ias u-psud fr) STAP team (Thermal Spectroscopy for Physics and Astrophysics) Deadline for application: february 23th 2009. Job starts: at a date to be defined with the candidate (typically september or october 2009, but with some flexibility between june and december 2009). Funding is available for 2 years (*) Research topic: EURECA is a European project, still in a design study phase, dedicated to the direct detection of dark matter particles (neutralinos) with cryogenic detectors underground (see http://www.eureca.ox.ac.uk/). Cross sections of neutralino candidates with nucleons in the targets as low as 10-10pbarn are foreseen -hence two orders of magnitude better than the best actual achievements- implying close to one ton of detectors. While EURECA design will be strongly influenced by the results of the two big european underground experiments CRESST and EDELWEISS, the project also incorporates experienced teams involved in the direct dark matter detection with bolometers or with very low radioactivity techniques at a research and development phase. The IAS team is just one of them, improving since 1994 the so-called scintillating bolometer technique and applying it to different targets. Scintillating bolometers cooled at temperature lower than 20mK are planned to be used within EURECA, for their ability to explore the huge uncertainties encountered in the constitution of the neutralino itself, while being able to susbstract efficiently in a single experiment all the systematics associated with an experiment dealing with very rare events. The massive detectors built by the IAS team since 1994 proved to be able to reject most of the radioactive background during tests performed either at IAS at sea level, or underground within the EDELWEISS or ROSEBUD experiments. Though, improvements are needed in view of the EURECA project: a simpler construction design, making more easy a future serial production of detectors, has to be looked for. Configurations similar to already existing ones (as the ones used by the EDELWEISS collaboration,...) could be explorated. much less radioactive Ge-NTD sensors, -our common thermistors- with respect to the existing ones are highly desirable. At low energy, where the expected signals is high, there is confusion with noise. Time constants criteria are no longer useful to distinguish among the non-ionizing events between the good events (recoiling nuclei) and the bad ones, decays in the Ge-NTD sensors, these latter being usually faster. At high energy, such decays could also be highly confusing at slow (some hundred of Hz) sampling rates, which are the ones used today in EDELWEISS and probably later by EURECA. It is hoped that, going from much purer germanium material as initial material, we should avoid unwanted radioactive impurities in the sensors. Such activated "impurities" are normally produced after exposure in the nuclear reactor used to transmuted part of the raw material (Ge) into the desirable doping elements. fast neutron detectors, a solution to measure the rarest fast neutrons remaining inside the dark matter experiments shieldings will help a lot in estimating their contribution to the observed rate of recoiling nuclei in the detectors. Fast neutrons, through their elastic scattering, are the ultimate background in experiments dealing with direct detection, but as well in other experiments looking for very rare events: a consequence of their strong penetration power. Simulations of shielding efficiencies are the normal tools used to estimate such a contribution, but we think that one should try also to measure this important contribution by in situ measurements when dealing with very low event rates. It was proposed recently to use the neutron capture reaction by 6Li in lithiated detectors (as massive 6LiF bolometers) to measure in a straightforward way the energy of fast neutrons in the 10keV-10MeV range. The post-doctoral fellow will work preferentially on these three topics at IAS, in collaboration with teams at CEA-IRFU-SEDI or at CNRS-CSNSM working within the EDELWEISS collaboration. Selection criteria: The succesfull candidate is expected - to hold a relevant PhD (in physics, astrophysics or astroparticle physics). - to be able to demonstrate the capacity to carry out independent high quality research in a related area. - to have experience in instrumentation at very low temperature with massive bolometers (particle detection) Preferences will be given to candidates hosted by the institutions participating in the EURECA project. Salary: The annual gross salary will be of 25 600 euros (2130 euros per month). How to apply: Send a CV, a complete list of publications, and a statement of research interests to Pierre de Marcillac (marcillac ias u-psud fr) (deadline, february 23th), and arrange to have letter(s) of recommendation sent by the same date. Electronic applications can be sent in pdf, ps, or word format. (*) This grant has been made available thanks to the the P2I (Physique des 2 Infinis) networking structure, joining research institutions within the Paris & Ile de France region (see http://events.lal.in2p3.fr/P2I/) ----------------------------------------------------------------------- 4. Journées asa/alma (6 et 7 avril 2009 à Grenoble): dernière annonce L'Action Spécifique ALMA organise à Grenoble deux jours de travail (les lundi et mardi 6 et 7 avril 2009) au cours desquels la communauté discutera de la manière dont elle souhaite s'organiser autour d'ALMA. Toutes les informations sont à jour (avec une première ébauche du programme) à l'adresse suivante : http://www.graal.univ-montp2.fr/hosted/alma/ALMA2009.html Ces journées permettront 1) de recenser les équipes qui préparent déjà scientifiquement ALMA et 2) de faire dialoguer les radio-astronomes avec ou sans expertise en interférométrie avec des observateurs venant d'autres domaines de longueur d'onde, des modélisateurs, des fournisseurs de données micro-physiques nécessaires à l'analyse des données, etc... Attention : les dates de clôture des inscriptions et de l'appel à contribution ont été changées. Elles sont maintenant toutes les deux fixées au vendredi 13 février 2009 au soir. ----------------------------------------------------------------------- 5. Post-doctoral fellowship at LAM (Marseille-France) on Herschel Extragactic Key Projects Applications are invited for a Postdoctoral Research Fellow position with Dr. A. Boselli and Pr. V. Buat within the team "Physique des Galaxies" at Laboratoire d'Astrophysique de Marseille to work on the Key Insights of Herschel Guaranted Time Key Projects devoted to extragalactic astronomy. The successful applicant will be involved with the reduction and analysis of photometric data obtained with the PACS and SPIRE instruments. The successful applicant will be able to work on one of the following Herschel Guaranted Time Key Projects: the Herschel Reference Sample (HRS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). HRS consists of a far-IR survey (250, 360, 520 microns) of a complete, K band selected, volume limited sample of 323 galaxies in the nearby universe. Combined with data at other wavelengths (from UV to radio centimetric) this sample will be used to study the physical properties of the interstellar medium (dust, gas, radiation field...) of galaxies spanning a large range in morphological type and luminosity with the aim of understanding the star formation process and the matter cycle in galaxies. HerMES consists of a large set of fields observed in several photometric bands from 70 to 550 microns with Herschel SPIRE and PACS with an unprecedented depth and spatial coverage. These data combined with ancillary surveys will give the first complete view on the evolution of galaxies over cosmological time giving access to the entire star formation occuring in the universe. The specific interest of our team will be to study the evolution of dust attenuation and star formation activity with redshift through the fitting of spectral energy distributions. Research experience in extragalactic studies with an emphasis on star-forming galaxies and infrared emission is desired. Experience with the reduction and photometric measurement of space-based data will be appreciated. Candidates should have obtained, by the starting date, a Ph.D. in Astronomy, Physics, Astrophysics, or equivalent. The appointment is for one year possibly renewable starting on September 1, 2009. To apply, please send resume, publication list, and statement of research to the address below and have three letters of reference forwarded to the same address. The deadline for applications is May 1, 2009. for informal inquiries:veronique.buat oamp fr, alessandro.boselli oamp fr

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Grassmannian Conference in Fundamental Cosmology Szczecin 14-19.09.09 (fwd)
by Boud Roukema 16 Jan '09

16 Jan '09

---------- Forwarded message ---------- > Date: Fri, 16 Jan 2009 12:00:56 +0100 (CET) > From: Mariusz Dabrowski mpdabfz wmf.univ.szczecin.pl > To: Boud Roukema: ; > Subject: Grassmannian Conference in Fundamental Cosmology Szczecin 14-19.09.09 Szanowni Panstwo, Pragne przypomniec, ze w dniach 14-19.09.2009 Szczecinska Grupa Kosmologiczna organizuje konferencje Grasscosmofun'09 (Grassmannian conference in Fundamental Cosmology). Informacje na temat konferencji znajduja sie na stronie: http://cosmo.fiz.univ.szczecin.pl Zapraszamy zainteresowanych czlonkow sieci do udzialu. Rejestracja odbywa sie online. W imieniu Komitetu Organizacyjnego, Mariusz P. Dabrowski Instytut Fizyki Uniwersytet Szczecinski

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cosmo workshop @14.00 Fri 12.12.2008 @KRA by Bartek Lew
by Boud Roukema 11 Dec '08

11 Dec '08

hi cosmo-torun, cosmo workshop @14.00 Fri 12.12.2008 @KRA by Bartek Lew We are starting a series of work meetings: mainly me + Bartek/Agnieszka/Zbyszek. People who are not yet at research level (e.g. younger students) or non-cosmologists are welcome to come along, but the main idea is not only to inform others what we are doing, but hopefully also to make concrete advances in our actual research projects. If i remember correctly, last time we had a meeting like this, Andrzej Marecki came up with an excellent, original idea, so sub-CMB extragalacticians are certainly welcome. i think Bartek's idea is right: if each of us presents our work once a month, then that makes for a meeting every week. With the 4 of us thinking together, along with undergraduate students with different levels of interest and AGN people making useful comments, i think we have the potential to make a real cosmology group. :) Anyway, see you all Friday. :) pozdr boud

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TODAY!! TODAY!! seminar on PDS (mostly 0801.0006) @KRA 10.15 Fri 24.10.2008
by Boud Roukema 23 Oct '08

23 Oct '08

hi cosmo-torun, Sorry for the late warning, but i'm not the organiser of KRA seminars! So the plan now is: "Ksztalt Wszechswiata" = seminar on PDS @KRA 10.15 Fri 24.10.2008 = today if you read your email daily. The content will be mostly on http://arXiv.org/abs/0801.0006 since i just read the email confirming what i thought had been put off to some unknown date until just a few minutes ago. That should be enough for a decent presentation and discussion in any case, IMHO. :) As usual, i imagine a poster was put up in KRA just yesterday Thursday, with no email reminder on our KRA internal mailing list.... pozdr boud

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Benasque - Glenn Starkman's presentation on S_xi approx 0
by Boud Roukema 08 Aug '08

08 Aug '08

hi cosmo-torun, Monday morning and afternoon discussion at Benasque were especially interesting for us! Glenn Starkman pointed out how important the observed S_{1/2} approx 0 is. (Spergel et al 2003 definition of S_{1/2}, which we calculate with a slightly different version, S_xi in our new paper http://arXiv.org/abs/0807.4260 ) He argues that this was already noticed in *COBE* data. Some of his talk is probably in: http://arxiv.org/abs/astro-ph/0605135 He pointed out that it's not just low C_2 and C_3 which give low S_{1/2}. In fact, at least up to C_5 is needed. Also, for a cosmic concordance infinite flat model, there needs to be a conspiracy between the various low l's in order that *all* of them are sufficiently low in order that the result is a low value of S_{1/2}. The main suggestion from his talk to explain this was the general approach at making a relativistic version of MOND - TeVeS - rather than cosmic topology - but the Aurich et al. PDS simulations suggest that the PDS is a good candidate for resolving the "Missing Fluctuations" problem. On Tuesday, Dominik Schwarz gave a very thorough talk on the Averaging Problem. Some rough notes and/or pointers to speakers' articles which should more or less match their talks are on the twiki: http://cosmo.torun.pl/Cosmo/BenasqueNotes2008 pozdr z gor Pyrenees :) boud

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On the most accurate ILC CMB map to date.
by Bartosz Lew 08 Jul '08

08 Jul '08

Hi cosmo-torun, http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0807.0773 is the work on the new the most accurate (as claimed) ILC method for producing clean CMB maps to date. The map is also available to download. best, Bartek

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http://arxiv.org/ps/0806.4493v1
by Bartosz Lew 07 Jul '08

07 Jul '08

Hi all, Who believes in the results of this work ? http://arxiv.org/ps/0806.4493v1 It's certainly disturbing, provocative interesting and intriguing. On the other hand all the technical stuff of the WMAP pipeline has been very well tested and all the systematics/foregrounds well constrained. regards, Bartek

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interesting cosmo meetings this summer: IAP, Benasque (.es), TIFR/IUCAA
by Boud Roukema 04 Apr '08

04 Apr '08

hi cosmo-torun, Three interesting cosmo meetings this summer (i already mentioned the IAP one). The deadline for applications is **April 15, 2008** for all three. * IAP, Paris "Far away: light in the young universe at z > 3" 7-11 July 2008, Paris http://www.iap.fr/ActivitesScientifiques/SeminairesEtColloques/ColloqueIAP2… + http://cosmo.torun.pl/pipermail/cosmo-torun/2008-March/000423.html * Benasque, Pyrenees (mountains on spanish/french border) "Modern Cosmology" 27 July - 14 August 2008 http://benasque.ecm.ub.es/2008cosmology/2008cosmology.htm * Pune, Maharashtra (India, monsoon time but the monsoon in Pune is mild (not strong) ;) "Cosmology with CMB and LSS" 21 July - 31 Aug (full = 6 weeks = 3 * 2-week sessions, but can stay for a shorter time) http://icts.tifr.res.in/sites/cmb/index pozdr boud

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XXIVth IAP Colloquium, Paris, July 7-11 2008. (fwd)
by Boud Roukema 13 Mar '08

13 Mar '08

> ---------- Forwarded message ---------- > Date: Wed, 12 Mar 2008 17:53:02 +0100 (CET) > From: Programme National de Cosmologie <pnc(a)iap.fr> > To: Programme National de Cosmologie <pnc(a)iap.fr> > Subject: XXIVth IAP Colloquium, Paris, July 7-11 2008. > > ----------------------------------------------------------------------- > PNC PNC PNC http://www2.iap.fr/pnc/ PNC PNC PNC PNC > ----------------------------------------------------------------------- > message n° 311 12 mars 2008 > > XXIVth IAP Colloquium, Paris, July 7-11 2008. > > The colloquium will be dedicated to important questions > related to the early universe before, during and after reionization. > The meeting will discuss the most recent observations in this > redshift range, and state-of-the-art models and numerical > simulations. > It will cover the following topics: > -- The 21cm line during reionization > -- Scenarios for reionization > -- First stars and high-z quasars > -- Star formation history in the early universe > -- Absorption signatures by the IGM > -- GRBs as tracers of the remote universe > -- The role of feedback and environment > > Information and registration > can be found at http://www.iap.fr/col2008/ > deadline for application: 15 April 2008 - maximum 110 participants

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nice review paper on ISW and SZ effects astro-ph/0711.0518
by Boud Roukema 20 Feb '08

20 Feb '08

hi cosmo-torun There's a nice recent review paper on ISW + SZ effects: Aghanim, Majumdar & Silk http://arXiv.org/abs/0711.0518 pozdr boud

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DE+DM conference in Lyon (France) 7-11 July 2008 [fwd from sf2a]
by Boud Roukema 05 Feb '08

05 Feb '08

witam >From the SF2A (French astro society). pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 28 Jan 2008 14:05:27 +0100 > From: SF2A... > --------------------------------------------------------------------------- > 9. Dark Energy and Dark Matter: First announcement of the CRAL/IPNL 2008 > conference > --------------------------------------------------------------------------- > The Centre de Recherche Astrophysique de Lyon (CRAL) and Institut de > Physique Nucléaire de Lyon (IPNL) are proud to announce the second > international conference in the CRAL/IPNL Conference Series: > "Dark Energy and Dark Matter: Observations, Experiments and Theories" > to be held July 7-11, 2008 in the beautiful city of Lyon, France. > http://cralconf.univ-lyon1.fr > > The conference will cover the following main themes (see further for > the full rationale): > - Dark Energy: > * Cosmology by Distance > * CMB, Large Scale Structures and Baryon Acoustic Oscillations > * Cosmology by the Growth of Structure > * Relativistic Cosmology > - Dark Matter: > * Astrophysical Evidence for Dark Matter > * Theoretical Candidates and Models for Dark Matter > * Direct and Indirect Searches for Particle Dark Matter > > Reviewers and invited speakers include: > * Elena Aprile > * Alain Blanchard > * George Ellis > * Kathy Freese > * Syksy Rasanen > * Subir Sarkar > * Carlo Schimd > * Brian Schmidt > * Dominik Schwarz > > Registration will open on February 4 2008 and we encourage you to apply > early. See our web site : http://cralconf.univ-lyon1.fr for information > and registration. > > Transmis par The Local Organizing Committee > > ---------------------------------------------------------------------- >

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Re: [Cosmo-torun] January 77% OFF
by cosmo-torun＠astro.uni.torun.pl 01 Feb '08

01 Feb '08

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conferences: XMM kwietnia 2008, Moriond-Cosmo marzec 2008 (fwd)
by Boud Roukema 30 Nov '07

30 Nov '07

> ---------- Forwarded message ---------- > Date: Fri, 30 Nov 2007 16:24:47 +0100 (CET) > From: Programme National de Cosmologie <pnc... > To: Programme National de Cosmologie <pnc... > Subject: [iso-8859-1] Diffusion PNC - mess. n° 303 > > ----------------------------------------------------------------------- > PNC PNC PNC http://www2.iap.fr/pnc/ PNC PNC PNC PNC > ----------------------------------------------------------------------- > message # 303 30 Nov. 2007 > > 1) Atelier XMM ? Paris du 14 au 16 avril 2008 > > 2) Moriond 2008 Cosmology > ----------------------------------------------------------------------- > PNC PNC PNC http://www2.iap.fr/pnc/ PNC PNC PNC PNC > ----------------------------------------------------------------------- > 1) Atelier XMM ? Paris du 14 au 16 avril 2008 > > Dans le cadre des projets de la 2eme decenie d'XMM, un atelier > international se tiendra a Paris du 14 au 16 avril 2008. > Le but de cette rencontre est d'examiner les arguments scientifiques > et la faisabilite d'un survey de ~ 100 deg2 avec XMM. > Une large place sera aussi faite a l'etude de surveys associes en > optique, SZ, IR, UV et radio. > - les propositions de contributions sont attendues pour le 15 janvier > 2008 - 2nd decade of XMM - workshop 14-16 April 2008 - Is a 200 sq.deg. survey with XMM feasible and scientifically worth it? - association with optical, SZ, IR, UV, radio surveys - deadline for contributions 15 Jan 2008 > Site web > http://www.astro.ulg.ac.be/RPub/Colloques/XXL/index.html > > Renseignements > marguerite.pierre at cea fr > ----------------------------------------------------------------------- > PNC PNC PNC http://www2.iap.fr/pnc/ PNC PNC PNC PNC > ----------------------------------------------------------------------- > 2) Moriond 2008 Cosmology > > The next Rencontres de Moriond meeting devoted to Cosmology > will be organized in La Thuile (Valle d'Aosta, Italy), > March 15-22, 2008. > > Registration is open on http://moriond.in2p3.fr/J08/ > where more details can be found (including abstract submission) > > The main topics covered in the conference will be : > > A. Dark Energy > + Cosmological probes (Reviews, experimental results > and/or new projects) > Type Ia Supernovae > Weak Lensing > Baryon Acoustic Oscillations > Galaxy Clusters: Deep Surveys > Future Projects > + Dark Energy Models and the Cosmological Constant > > B. Dark Matter > + Dark matter in galaxies and clusters of galaxies > + Gravitational lensing and dark matter > + Lyalpha forest > + Dark Matter: direct searches > + Dark Matter indirect detection with galactic gamma rays > > C. Structure Formation: prediction of simulations > + Evolution of baryonic structures in large cosmological simulations and > confrontation with observations > + Cluster simulations: Estimation of uncertainties in Dark Energy > projects > > D. CMB > + Present observations > + Combining CMB with other cosmological probes > + Polarization > + Foregrounds > + R&D > > E. Theoretical Perspectives > + Dark Energy models > + Modified gravity and alternatives (MOND) > + Inflationary Model and alternatives > + Brane Cosmology > + Back reaction > + Beyond the Standard Model: Dark Matter candidates >

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A discussion on the flatness of the Universe
by Andrzej Marecki 22 Nov '07

22 Nov '07

Just to point your attention to a thread on sci.astro.research where the flatness of the Universe is questioned/defended. The title of the thread starts with "Flat Earthers..." -- a.m. -- ----------------------------------------------------------------------------- Andrzej Marecki | Torun Centre for Astronomy | e-mail: amr(a)astro.uni.torun.pl N. Copernicus University | WWW: http://www.astro.uni.torun.pl ul. Gagarina 11 | tel: +48 56 6113032 PL-87-100 Torun, POLAND | fax: +48 56 6113009 -----------------------------------------------------------------------------

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Re: [Cosmo-torun] festiwal nauk i sztuki 2008 - DEADLINE FOR SUBMISSION czwartek 22.11.2008 (fwd)
by Boud Roukema 22 Nov '07

22 Nov '07

Done: ubmitted to festiwal.torun.pl: http://cosmo.torun.pl/Cosmo/FestiwalNauki2008 pozdr boud

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festiwal nauk i sztuki 2008 - DEADLINE FOR SUBMISSION czwartek 22.11.2008
by Boud Roukema 20 Nov '07

20 Nov '07

witam cosmo-torun The deadline for submitting a proposal for this year's Festiwal Nauk i Sztuki is Thursday 22.11.2008. FNiS2008 will be 24-27 kwietnia 2008. http://cosmo.torun.pl/Cosmo/FestiwalNauki2007 Who is interested in doing a cosmo presentation? Agnieszka? Are you likely to be available 24-27 April? Zbyszek? Or maybe Helena - are you interested? Or someone else? My guess is the easiest thing is to keep the same title/content as last year, since they remain scientifically valid AFAIK. If Agnieszka at the last minute is not available, then Zbyszek or i can easily make that part of the presentation (if you give us your pdf presentation file :) - so the audience will still get a full presentation. Last year we were Friday afternoon 20 April; i suggest we do the same, this year ask for Friday 25 April. http://cosmo.torun.pl/Cosmo/FestiwalNauki2007 pozdr boud

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Mon 19 Nov 16.30 @sala XX.IF: JP Luminet - the shape of space
by Boud Roukema 05 Nov '07

05 Nov '07

Witam The embassy changed its plans a bit, so now Jean-Pierre's talk is planned for Monday afternoon 19 Nov as a regular sala XX seminar: ---------------------------------------------------------------------- 16.30 on Mon 19 November, sala XX, Instytut Fizyki (ul. Grudziadzka, 5) TITLE: The shape of space : from black holes to cosmic topology SPEAKER: Jean-Pierre Luminet, Laboratoire de l'Univers et Théories (LUTH), Observatoire de Paris-Meudon, http://luth2.obspm.fr/luminet.html ABSTRACT: The decription of the shape of our physical space at various scales (length scales or energy scales) involves a rich variety of geometrical models, each depending on the underlying physical theory. Imaging distorted space and time by gravitational and quantum fields is a big challenge of modern fundamental physics. I shall discuss such space representations for describing the shape of space around and inside black holes, next the global shape of our universe in the framework of cosmic topology. Striking movies and color visualizations will be displayed. ---------------------------------------------------------------------- He'll give a talk about Copernicus - in French - in the morning at 11.00am at "the University" (i guess Collegium Maius, though this is just a guess) and the new Alliance Francaise will be opened at 15:00 (which is why JPL will come straight from the opening ceremony to Instytut Fizyki and we suggest 16.30 as the official starting time). We suggest an informal meeting over dinner some time in the evening, especially for the people in our cosmology group who will be in Torun at the time! pozdr boud

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seminar JP Luminet 14.00 Tues 20.11.2007 @KRA
by Boud Roukema 12 Oct '07

12 Oct '07

Witam cosmo-torun, Jean-Pierre Luminet (Laboratory Universe & Theories (LUTH), Observatoire de Paris (France), http://luth2.obspm.fr/luminet.html) will give a seminar here as below. For those people interested, i'm thinking especially of cosmology students/doktoranci, it would be good to join Jean-Pierre and myself in the city centre in the morning, for casual discussion and lunch. After that we will come to Piwnice. 14.00 on Tues 20 November @KRA TITLE: The shape of space : from black holes to cosmic topology ABSTRACT: The decription of the shape of our physical space at various scales (length scales or energy scales) involves a rich variety of geometrical models, each depending on the underlying physical theory. Imaging distorted space and time by gravitational and quantum fields is a big challenge of modern fundamental physics. I shall discuss such space representations for describing the shape of space around and inside black holes, next the global shape of our universe in the framework of cosmic topology. Striking movies and color visualizations will be displayed. pozdr boud

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Canaries CMB winter school 19-30 November 2007 - deadline 30 June
by Agata Karska 26 Jun '07

26 Jun '07

I've just come back from another conference organized in Canary Islands. Deadline for abstract was January 31st but in practice I was able to submit mine until May 10th (!). The place is very expensive (77 euros/day are not so much surprising) but I suppose they will have good sources of funding for participants and everybody interested should at least try to ask them about it. Agata

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Canaries CMB winter school 19-30 November 2007 - deadline 30 June
by Boud Roukema 26 Jun '07

26 Jun '07

hi cosmo-torun There is an interesting winter school on the CMB - 19-30 November 2007: http://www.iac.es/winschool2007/pages/announcement.php The only difficult (strange) thing is that you must apply before 30 June, i.e. just a few days away!!! which is 6 months in advance. > Those interested in attending the WS should send a Curriculum Vitae, a > short summary of their current research project and a letter of > reference from their thesis advisor, or Head of Department, by filling > out the web forms in above links or by mailing to the address > below. These should reach the IAC before June 30th. Selected > candidates will be informed by September 7th. My guess is they probably need to apply for funding or pay something in advance, but they also ask for 1300 euros registration fee - this includes accommodation for 13 days. A normal registration fee for a big conference can easily be 300 euros, so this would make about 77 euros/day for accommodation (including food - "full-board"). Sounds strange and expensive to me. But if someone wants to go and can get funding, it could be a good winter school. pozdr boud

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astrogrid-pl (astropolityka)
by Boud Roukema 31 May '07

31 May '07

Witam cosmo-torun, Istnieje grupa dyskusyjna dla ASTROGRID-PL - projekt administracyjno-polityczny dla klastrów komputerowych dla astronomów w Polsce. Nie jestem odpowiedzialny dla poufny/zcentralizowany sposób według którym jest zaorganizowany - prosiłem aby Bartek jest napisany w grupie, Geniu już jest. Jeśli ktoś więcej się interesuje, mów i mogę prosić że jesteś dodawany. Jest trochę cieżki sposób zaorganizować komunikację, ale jeszcze raz, to nie moja winna. pozdr boud

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http://arxiv.org/abs/0705.3655
by Bartosz Lew 28 May '07

28 May '07

hi everyone this sounds interesting http://arxiv.org/abs/0705.3655 Title: Evidence Of Dark Matter Annihilations In The WMAP Haze Authors: <a href="http://arxiv.org/find/astro-ph/1/au:+Hooper_D/0/1/0/all/0/1">Dan Hooper</a>, <a href="http://arxiv.org/find/astro-ph/1/au: +Finkbeiner_D/0/1/0/all/0/1">Douglas P. Finkbeiner</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dobler_G/0/1/0/all/0/1">Gregory Dobler</a> Comments: 4 pages, 3 figures The WMAP experiment has revealed an excess of microwave emission from the region around the center of our Galaxy. It has been suggested that this signal, known as the ``WMAP Haze'', could be synchrotron emission from relativistic electrons and positrons generated in dark matter annihilations. In this letter, we revisit this possibility. We find that the angular distribution of the WMAP Haze matches the prediction for dark matter annihilations with a cusped density profile, $\rho(r) \propto r^{-1.2}$ in the inner kiloparsecs. Comparing the intensity in different WMAP frequency bands, we find that a wide range of possible WIMP annihilation modes are consistent with the spectrum of the haze for a WIMP with a mass in the 100 GeV to multi-TeV range. Most interestingly, we find that to generate the observed intensity of the haze, the dark matter annihilation cross section is required to be approximately equal to the value needed for a thermal relic, $\sigma v \sim 3 \times 10^{-26}$ cm$^3$/s. No boost factors are required. If dark matter annihilations are in fact responsible for the WMAP Haze, and the slope of the halo profile continues into the inner Galaxy, GLAST is expected to detect gamma rays from the dark matter annihilations in the Galactic Center if the WIMP mass is less than several hundred GeV. -- Bartosz Lew, The Graduate School of Science, Nagoya University email: blew(a)a.phys.nagoya-u.ac.jp tel: +81 52 7892842 www: mail: Department of Physics and Astrophysics, Nagoya University, Chikusa-ku Nagoya 464-8602 Japan

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Verschuur [0704.1125] HI correlates with 1deg scale WMAP hot spots?
by Boud Roukema 17 May '07

17 May '07

witam cosmo-torun, http://cosmocoffee.info/viewtopic.php?t=865 astro-ph/0704.1125 High Galactic latitude interstellar neutral hydrogen (HI) structure and associated acoustic-scale WMAP hot spots Authors: Gerrit L. Verschuur Associations have been found between interstellar neutral hydrogen (HI) emission morphology and small-scale structure observed by the Wilkinson Microwave Anisotropy Probe (WMAP) in a Target Area bounded by l = 60 deg & 180 deg, b = 30 deg & 70 deg. ... Is some part of the angular power spectrum at about a degree (first "Doppler peak") due to interacting/colliding HI clouds around our Galaxy? pozdr boud

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spotka sroda 13:00 czas polski = 20:00 czas japonski @KRA + gg
by Boud Roukema 07 May '07

07 May '07

witam, Spotkanie kosmo - dyskusja naszych róźnych projektów: * środa 9.05.2007r. w sali seminarium KRA o 13.00g Bartek + Agnieszka + Zbyszek + Boud + otwarte dla innych interesowanych w badania kosmo. Bartek będzie obecny przez gg i próbujemy też ekiga audio/video :). pozdr boud

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Re: Szkoła fizyki teoretycznej dla doktorantów
by Boud Roukema 11 Apr '07

11 Apr '07

Witam Marek, Średnie oczekiwamy na około 1.55 doktorantów toruńskie na rocznym szkołu - na założenie 3 szkoły w następnych 3 latach, mamy [2.5 + 2.0 + (0.05*3) ] /3 = 1.55 według interpretację czestotliwościową, lub inaczej, może poprostu to traktować jako P( ) bayesowska. pozdr boud On Wed, 7 Mar 2007, zralek wrote: > Szanowni Panstwo, > > Jak wiekszosc z Panstwa wie na ostatnim spotkaniu naszego > porozumienia 19 lutego w Warszawie zdecydowalismy, iz bedziemy > organizowac Szkoly fizyki teoretycznej dla doktorantow z fizyki > czastek, astrofizyki i kosmologii. Na takiej tygodniowej Szkole, > organizowanej cyklicznie przez wszystkie grupy naszego porozumienia, > odbywalyby sie serie wykladow specjalistycznych, ktore trudno > przeprowadzic w poszczegolnych osrodkach albo ze wzgledu na mala > liczbe sluchaczy albo brak kadry. Po pierwsze, prosze o komentarz w > tej sprawie wszystkich, ktorzy nie byli obecni w Warszawie. I sprawa > druga, zgodnie z naszymi ustaleniami urzejmie prosze o podanie ilu > doktorantow mogloby brac udzial w takiej Szkole z kazdego Osrodka. > Lacze serdeczne pozdrowienia, > Marek Zralek >

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Diffusion PNC (fwd)
by Boud Roukema 10 Apr '07

10 Apr '07

hi cosmo-torun, Several conferences (most announcements in English) from the PNC: pozdr boud ---------- Forwarded message ---------- > Date: Fri, 6 Apr 2007 11:02:23 +0200 (CEST) > From: Programme National de Cosmologie <pnc at iap.fr> > To: Programme National de Cosmologie <pnc at iap.fr> > Subject: Diffusion PNC --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- message # 291 6 Avril 2007 1) PostDoc , "Dynamics of Galaxies " , LAM (Marseille) 2) Postdoc , GRBs with the SVOM satellite , LAM (Marseille) 3) Postdoc , LAM ( Marseille ) , "Oscillations acoustiques des baryons dans le CFH-LS et les prochains sondages grand-champ" 4) Postdoc, Paticle Astrophysics and String theory, Stockholm (Physics Dept.) 5) Postdoc in Observational Cosmology , Portsmouth (UK) 6) Postdoc positions at Instituto de Astrof?sica de Canarias ( Spain ) 7) Summer School , "Formation and Evolution of cosmic Structure" Novicosmo 2007 , Novigrad-Cittanova , Croatia 10-21 September 2007 8) SIGRAV graduate school in contemporary relativity and gravitational physics , VII edition : " The Dark side of the universe" Villa Olmo, Como, Italy , May 14-18, 2007 9) Ecole de Physique des Astroparticules - I 10 -15 septembre 2007, OHP, Saint Michel l'Observatoire ?La Physique des Astroparticules? 10) Santa Fe Cosmology Summer Workshop, July 2-20 11) Ecole Internationale d'Astrophysique Daniel Chalonge "Dark Matter, Dark Energy, CMB and LSS: Understanding the Physics of the Universe" 16 -17-18 AUGUST 2007, Observatoire de Paris HQ, Paris campus 12) workshop : " future wide field weak lensing surveys for cosmology." April 24-25, 2007 , CPPM , Marseille. 13) Conference " Data Analysis in Cosmology 2007 " July 9 - 12, 2007 , Santander (Spain) 14) Third Sino-French conference:"Origins". Paris, Sevres 15-20 octobre 2007 --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 7) Summer School , "Formation and Evolution of cosmic Structure" Novicosmo 2007 , Novigrad-Cittanova , Croatia 10-21 September 2007 Motivations: The goal of understanding the formation and evolution of the cosmic structures in the Universe drives current advances in observational cosmology. Over the last decade tremendous progress has been made in the direct observational study of structures to look back times covering over 90% of the age of the Universe. In the current paradigm, cosmic structure grows through gravitational instability which acts to boost small initial fluctuations, seeded from quantum fluctuations during the inflationary phase of the Universe. Dark matter haloes are built up which host ordinary baryons. These blossom into luminous galaxies. While the evolution of the dark matter follows simple physics, namely gravity, our knowledge has significant gaps when it comes to describing the luminous, baryonic component of the Universe; this ignorance becomes spectacular in the case of the very first "luminous" objects which lit up the Universe at the end of the Dark Ages. Complex physical processes need to be considered. Through the use of increasingly sophisticated computer simulations, the first realistic attempts to model the process of galaxy formation over the history of the Universe are now being made. The purpose of the School is to provide to young scientists with the opportunity to widen their knowledge of cosmology and extragalactic astrophysics and to become acquainted with key recent theoretical and experimental results, as well as to foster an interactive exchange among participants. We seek to establish an atmosphere in which observers and theorists will review, confront and discuss with young scientists recent progress and future directions. The School is then aimed at PhD students and young scientists with a Post-doc experience of less than 4 years. Outstanding upper level undergraduates may also be considered. Each subject will be covered by 3 lectures of 2 hours each, delivered by a scientist who has made significant contributions to the topic. Everyday there will be a special seminar on a particularly important subject in the field of Cosmology. http://www.novicosmo.org/ --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 8) SIGRAV graduate school in contemporary relativity and gravitational physics , VII edition : " The Dark side of the universe" Villa Olmo, Como, Italy , May 14-18, 2007 http://www.centrovolta.it/sigrav/ The SIGRAV Schools are directed to PH.D. students and young Post-Docs in Physics, Astronomy and Mathematics who are interested in widening their knowledge in the fields of Physical Cosmology, Relativistic Astrophysics, General Relativity, Experimental Gravity and the Modern Quantum Theories of Gravitation. The Schools wish to introduce students to current problems, highlighting their importance and potential scientific impact. Lecturers will report on theoretical, observational and experimental aspects of the research, reviewing latest achievements in the field. PROGRAM Studying the physical and astrophysical properties of the dark matter and dark energy components of the Universe is a crucial step towards the ultimate goal of unveiling their nature. A large number of present and future experiments and observations is indeed devoted to this goal. The school will focus on the theoretical and experimental/observational aspects of this problem, as seen from both its cosmological and particle physics sides. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 9) Ecole de Physique des Astroparticules - I 10 -15 septembre 2007, OHP, Saint Michel l'Observatoire Â? La Physique des AstroparticulesÂ? Nous avons le plaisir de vous annoncer l'école thématique du CNRS intitulée Ecole de Physique des Astroparticules elle se tiendra ? l'OHP (Saint Michel l'Observatoire) du 10 au15 septembre 2007. hhttp://www.cpt.univ-mrs.fr/~cosmo/WEB_EAP_07/EcoleAP-OHP07.html Les organisateurs B. Degrange (LLR) - J. Lavalle (CPPM) - R. Triay (CPT) Contexte Scientifique La physique des astroparticules investit aujourd'hui des problématiques aussi diverses que l'origine et la propagation des particules-rayonnements, la masse des neutrinos, la proportion d'anti-mati?re dans l'univers, l'existence et l'origine de la mati?re noire, l'invariance de Lorentz, la physique des processus gravitationnels ? champs forts, etc. Ces derni?res années, les expériences associées ? cette thématique se sont considérablement développées et leurs résultats suscitent toujours plus d'enthousiasme. Dans la perspective d'assurer une formation conséquente dans ce champ explicitement interdisciplinaire, le programme a une tendance assez généraliste, il mettra en évidence les point forts des th?mes suivants : Neutrino -- Gamma et GRB -- Sources et processus d'UHE -- Mati?re noire -- Rayons cosmiques et accél?rateurs cosmiques. Il vise ? couvrir autant les aspects d'observation que théoriques de ces problématiques. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 10) Santa Fe Cosmology Summer Workshop, July 2-20 The Santa Fe topical workshop for 2007 will concentrate on recent developments in cosmology, especially those related to current and expected observational advances, including the cosmic microwave background, large-scale structure, galaxies and clusters, and dark matter and energy/early universe. The format will emphasize discussion with some formal pedagogical review and related talks as appropriate. Generally speaking we would like to reserve the largest fraction of the day for discussion and informal meeting. To encourage this informality and discussion, attendance will be limited to about 80 participants. There will be no registration fee and highly subsidized housing will be provided (the precise cost estimates will be available soon, but are typically $150/room/week, $50/week for students). Travel support will not be available. To register for the meeting and to make suggestions for the scientific program, go to the Workshop website at http://t8web.lanl.gov/people/salman/sf07/ We will be filling spaces on a rolling basis, so you are strongly advised to register as soon as possible, and preference will be given to those who register before April 05, 2007. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 11) Ecole Internationale d'Astrophysique Daniel Chalonge "Dark Matter, Dark Energy, CMB and LSS: Understanding the Physics of the Universe" 16 -17-18 AUGUST 2007, Observatoire de Paris HQ, Paris campus The Colloquium is within the astrofundamental physics spirit of the Chalonge School, this time focalized on recent observational and theoretical progress on dark matter, dark energy, including neutrinos and sterile neutrinos, CMB data and the theory of the early universe with predictive power. The Topics are: Observational and theoretical progress in deciphering the nature of dark matter and dark energy . CMB and Large scale structure formation. Inflation after WMAP (in connection with the CMB and LSS data), quadrupole suppression and initial conditions; quantum effects. CMB polarization, primordial magnetic fields effects. Neutrinos in cosmology. In summary, the aim of the meeting is to put together real cosmological data and hard theory predictive approach connected to them. An exhibition will retrace the 15 years of activity of the Chalonge School and of George Smoot participation to the School along these 15 years. All informations about the Meeting, including the general timing and the Programme and Lecturers of the Colloquium and registration information are displayed at the chalonge school web site http://chalonge.obspm.fr/colloque2007.html Early Registration is strongly encouraged Chalonge.Ecole at obspm.fr --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 12) workshop : " future wide field weak lensing surveys for cosmology." April 24-25, 2007 , CPPM , Marseille. The idea is to allow discussion between scientists working on current or future (either approved or still in development) wide field weak lensing surveys. Although a good understanding on the statistical limits of weak lensing exist, systematics are still to be explored in details and need to be fully understood (shape measurements, understanding and modeling the PSF correction, but also photometric redshifts and its requirements for calibration) in order to optimize the survey and ultimately give the best cosmology constraints. Furthermore, with the current and future lensing surveys there will be other lensing interests than measuring cosmic shear to probe cosmology, so it would also be very useful to discuss these science cases and understand their requirements. I wish you can come and participate to this workshop. So please let me know if you are able to attend and give me the title of your oral contribution ideally before March 23, 2007. The venue of the meeting will be at CPPM on the Marseille-Luminy campus http://marwww.in2p3.fr/ More details on the meeting, venue, list of participants can be found at http://www.oamp.fr/cosmology/weaklensing2007/ Jean-Paul Kneib on behalf of the SOC: Gary Bernstein, Anne Ealet , Yannick Mellier, Bruno Milliard, Alexandre Refregier, Jason Rhodes, Ludovic van Waerbeke, --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 13) Conference " Data Analysis in Cosmology 2007 " July 9 - 12, 2007 , Santander (Spain) The goal of the conference is to bring together experts on techniques and methodologies for data analysis which could be applied to cosmological studies. In particular the meeting will focus on: * Statistical analysis (Bayesian statistics, PCA,ICA, etc) * Neural networks * Multi-scale analysis * Inverse problem * Morphological analysis * Data fusion Registration is now open through the meeting's web page: http://max.ifca.unican.es/webcmb/dac07/ There will be a limited number of contributed talks and posters.More details on the meeting can be found in the previous web page. Please, circulate this announcement to anyone who might be interested. Contact: For practical questions about hotel reservation and travel information, please write to: congresossantander at viajeseci.es For general questions, please write to: dac007 at ifca.unican.es --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 14) Third Sino-French conference:"Origins". Paris, Sevres 15-20 octobre 2007 La troisieme conference franco-chinoise aura lieu a Paris (Sevres), du 15 au 20 octobre 2007, sur les themes: origines. La thematique "Origines" (de la matiere: cosmologie ; de la vie : planetes extra-solaires) est une des fortes priorites des agences europennes et chinoises en astronomie/astrophysique. C'est une des grandes questions du 21me siecle pour laquelle d'etonnants progres ont ete realises ces dernieres annees: decouvertes des planetes extrasolaires, de l'acceleration de l'Univers et de l'energie noire, des anisotropies du fond de rayonnement cosmologique, et des processus de formation des galaxies, pour lesquelles de tres forts investissements en instrumentation sol et espace ont ete engages. voir le site: http://origins.obspm.fr --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC ---------------------------------------------------------------------------

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ile doktoranci w Toruniu sa potencjalnie interesowani w szkolu CAK ?
by Boud Roukema 15 Mar '07

15 Mar '07

[do: dokt-l phys, doktoranci astri, cosmo-torun] [odp: prywatny lub cosmo-torun] Witam doktorantom, Kosmologów i fizyków cząstki (CAK) się organizujemy w sieci w Polsce: http://cosmo.torun.pl/Cosmo/PorozumienieCAK http://www.fuw.edu.pl/~porozumienie/ Czy jesteś doktorantem/ką, który ,,mogloby brac udzial w takiej Szkole" ? Chyba ma interpretować ,,mogloby" jak więcej niż 30% szans w jednym roku (nie pamiętam jak często był pomysł to zrobić, ale chyba raz w roku jest rozsądny), że uczestniczyłbyś. (Chyba to szans bayesowski Co wiem w tej chwili: Moja propozycja/spekulacja aktualn CA: KRA - Lew/Szaniewska/Buliński - 3 osoby na średnio P = 30% (?) CA: KAA - czy jest ktoś potencjalnie zainteresowany ? IF: czy jest ktoś potencjalnie zainteresowany ? CAMK-Toruń: czy jest ktoś potencjalnie zainteresowany ? Sprawa jest trochę osobowa (jak zarządzisz twój czas), więc możesz odpowiedzić na prywatny lub na cosmo-torun at cosmo.torun.pl jak chcesz. Cel w tej chwili jest wiedzieć mniej-więcej ile doktoranic mamy w temacie. pozdr boud DYSKUSJA O SZKOŁY KOSMO-ASTRO-CZASTKI http://cosmo.torun.pl/pipermail/cosmo-pl/2007-March/000039.html > Szanowni Panstwo, > > Jak wiekszosc z Panstwa wie na ostatnim spotkaniu naszego > porozumienia 19 lutego w Warszawie zdecydowalismy, iz bedziemy > organizowac Szkoly fizyki teoretycznej dla doktorantow z fizyki > czastek, astrofizyki i kosmologii. Na takiej tygodniowej Szkole, > organizowanej cyklicznie przez wszystkie grupy naszego > porozumienia, odbywalyby sie serie wykladow specjalistycznych, ktore > trudno przeprowadzic w poszczegolnych osrodkach albo ze wzgledu na > mala liczbe sluchaczy albo brak kadry. Po pierwsze, prosze o > komentarz w tej sprawie wszystkich, ktorzy nie byli obecni w > Warszawie. I sprawa druga, zgodnie z naszymi ustaleniami urzejmie > prosze o podanie ilu doktorantow mogloby brac udzial w takiej Szkole > z kazdego Osrodka. > > Lacze serdeczne pozdrowienia, > Marek Zralek

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several conferences in 2007
by Boud Roukema 22 Feb '07

22 Feb '07

---------- Forwarded message ---------- > Date: Thu, 22 Feb 2007 13:04:36 +0100 (CET) > From: Programme National de Cosmologie <pnc at iap.fr> > To: Programme National de Cosmologie <pnc at iap.fr> > Subject: Diffusion PNC --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- message # 289 22 Fev. 2007 5) Public release of the VVDS-DEEP first epoch spectra 6) ESO Workshop on "Science with the VLT in the ELT era" Garching near Munich, Germany, 8-12 October 2007 7) Workshop, From Quantum to Cosmos II,Bremen, Germany, June 10-13, 2007. " Space-based Research in Fundamental Physics and Quantum Technologies" 8) XXIIIrd IAP Colloque, in Honour of Bernard Fort "From giant arcs to CMB lensing: 20 years of gravitational distortion" July 2 to Friday July 6, 2007 , IAP Paris 9) Conference ,Château de Blois, France, May 20-May 26 2007 "Matter and Energy in the Universe: from nucleosynthesis to cosmology" 10) Conference : "Frontiers of Nonlinear Physics" (FNP 2007) w Nizhny Novgorod July 3 to July 9, 2007. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 5) Public release of the VVDS-DEEP first epoch spectra The VIMOS VLT Deep Survey team (http://www.oamp.fr/virmos/) is pleased to annonce the public release of a catalogue of 8981 spectra of galaxies, stars and QSOs, selected to have 17.5 < I(AB) < 24.0 in the VVDS 0226-04 field. The spectroscopic redshifts are measured in the range 0 < z < 5, with a median redshift of about 0.76. The sample covers 0.5 deg2 of sky area. The on-line database gives access to the redshifts and quality flags, to the multi-wavelength photometric information, as well as to the images and VIMOS spectra. The data can be accessed via http://cencosw.oamp.fr Reference papers for the data are about: (a) the spectroscopy: Le Fevre et al., 2005, AA, 439, 845, and Le Fevre et al., 2004, AA, 428, 1023, (b) the imaging and photometry: Le Fevre et al., AA, 417, 839, McCracken et al., 2003 , AA, 410, 17, Radovich et al., 2004, AA, 417, 51 and Iovino et al., 2005, 442, 423, (c) the information system: Le Brun et al., 2007, AA, in preparation. For further information please contact: vincent.lebrun at oamp.fr, laurence.tresse at oamp.fr. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 6) ESO Workshop on "Science with the VLT in the ELT era" Garching near Munich, Germany, 8-12 October 2007 RATIONALE: The first of the ELTs (Extremely Large Telescopes) now under study could see first light in around 10 years when the ESO VLT will still be fully operational and receiving new 2nd generation instrumentation and upgrades. Even before then we will also have entered the ALMA (and JWST) era. This Workshop will provide a forum for the ESO community to debate and provide valuable feedback on how it expects the scientific use and required instrumentation of the VLT and VLTI to evolve over this period. It is expected that the results will have a major impact on the priorities to be set in the next ESO Call for VLT Instrument Proposals planned to be issued in 2008. Amongst the topics envisaged are: -Science highlights illustrating unique VLT and VLTI capabilities -Future research priorities recommended by Astronet,ESA/ESO Working Groups etc. - New science capabilities offered by instruments to be installed in 2008-2012 (HAWK-I, X-Shooter, KMOS, SPHERE, MUSE, PRIMA, 2nd gen. VLTI) - ELT science priorities and possible first light instruments - VLT and VLTI synergies with ELT, ALMA, JWST... - VLT and VLTI science priorities beyond 2014 and consequences for possible specialization of telescopes, operational modes etc. - Available resources and concepts for new 2nd generation VLT instruments to be installed beyond 2014 FORMAT: - Invited review/overview talks - Contributed papers and posters - Discussion sessions following each major topic More details and registration at http://www.eso.org/vlt07 --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 7) Workshop, From Quantum to Cosmos II,Bremen, Germany, June 10-13, 2007. " Space-based Research in Fundamental Physics and Quantum Technologies" The purpose of this workshop is to highlight the emerging discipline of space-based research in fundamental physics and demonstrate how this area of modern science can provide the knowledge needed to address outstanding questions at the intersection of physics, astronomy, and cosmology, thereby leading to major advances in these fields. More details at http://www.zarm.uni-bremen.de/Q2C2/. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 8) XXIIIrd IAP Colloque, in Honour of Bernard Fort "From giant arcs to CMB lensing: 20 years of gravitational distortion" July 2 to Friday July 6, 2007 , IAP Paris We are please to announce the XXIIIrd IAP colloquium that will held at IAP between July 2 and 6. Each year, The Institut d'Astrophysique de Paris organizes a colloquium on a different topic in cosmology and astrophysics 2007 will be the 65th anniversary of Prof. Bernard Fort and the 20th anniversary of the first papers on the discovery of giant arcs. To celebrate ths event, the XXIIIrd IAP colloquium will focus on gravitational distortion: rings, giant arcs, weak lensing and cosmic shear, distortion of CMB anisotropy maps. More details on the meeting will be published soon. But we invite you to register already at the following registration page http://www.iap.fr/scripts/colloques/iap2007/regmenu.asp --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 9) Conference ,Château de Blois, France, May 20-May 26 2007 "Matter and Energy in the Universe: from nucleosynthesis to cosmology" http://confs.obspm.fr/Blois2007/index.htm This is an announcement and call for papers for an international conference which will be held in the Château of Blois, in France's Loire Valley. Matter and Energy in the Universe: from nucleosynthesis to cosmology is articulated around our increasingly detailed understanding of the processes involved in the creation of the elements and about our increasingly confused picture of the content of the Universe. The year 2007 fmarks the fiftieth anniversary of two groundbreaking papers (the famous B2FH paper, and also a slightly less well known paper by A. Cameron) which finally put stellar nucleosynthesis on the map, and almost the sixtieth anniversary of the first quantitative calculations of big bang nucleosynthesis; although this latter paper turned out to be fundamentally flawed insofar as nucleosynthesis is concerned, it did lead directly to Alpher and Hermann's prediction of the ubiquitous cosmic microwave background radiation, whose detailed study using instruments on the COBE satellite earned this year's Nobel prize for physics. It thus seems appropriate to "stand back" and survey what has been achieved, and (especially) to highlight the puzzles which remain to be solved. Matter and energy in the Universe? will be organised around a number of basic themes, including: - the contents of the Universe - abundance determinations - primordial nucleosynthesis - stellar thermonuclear nucleosynthesis - the nucleidic evolution of galaxies - cosmological cosmic rays, galactic cosmic rays and stellar energetic particles - dark matter, dark energy: what do we really know, and what can we surmise - the future. The conference will consist of plenary sessions for invited indepth oral presentations (review talks and talks on specific specialised topics), and contributed papers, in the form of relatively short oral papers or posters. We will aim to achieve a balance between review talks, provocative talks given by recognized specialists, and shorter contributions, special emphasis being placed on participation by younger researchers and post-docs. If the need arises (i.e. if so many short papers are proposed that plenary sessions are insufficient), parallel sessions will be organised - please do not hesitate to contribute your work - time can always be found! This conference will be the 19th in a series of international mulitidisciplinary meetings which have in the past covered many topics in physics, astronomy and biology. All sessions take place in the Château of Blois, a beautiful renaissance castle which has housed many French kings, and notably François 1st. Meals are served in the castle to all participants, in order to encourage interaction between scientists at all levels. Participation is limited to about 150 persons. The detailed scientific programme is currently under development; on the web site http://confs.obspm.fr/Blois2007/index.htm you will find the latest information, and if you urgently need information which is currently not available on this site, you may contact L. M. Celnikier, at the email address: blois.confs at obspm.fr The web site will be updated regularly, as new information becomes available. Please login regularly. --------------------------------------------------------------------------- PNC PNC PNC http://www.iap.fr/pnc/ PNC PNC PNC PNC --------------------------------------------------------------------------- 10) Conference : "Frontiers of Nonlinear Physics" (FNP 2007) w Nizhny Novgorod July 3 to July 9, 2007. The Conference is focused on recent progress in the interrelated fields of nonlinear dynamics with applications to physical systems of different origins. Conference scope covers the following subjects, including both basic aspects and advanced applications: * Nonlinear dynamics: Coherent and stochastic processes * General problems of nonlinear waves: Solitons, collapses, and turbulence * Nonlinear processes in plasmas and laser-plasma interactions * Nonlinear and high-field optics * Nonlinear acoustics * Nonlinear processes and turbulence in fluid dynamics * Nonlinear problems in geophysics * Nonlinear problems in astrophysics and cosmology * Nonlinearities and coherent phenomena in quantum systems The conference program will include topical oral and poster sessions, and a set of plenary lectures on interrelated topics. The list of proposed MINI-SYMPOSIA includes: * Physics of Cold Gases and Bose-Einstein Condensates * Large Nonlinear Water Waves, with a Special Focus on Rogue Waves, Wave Breaking and Remote Sensing * Physics of Extreme Light: Novel Particle and Radiation Sources * Turbulence in Fluids and Plasmas * Nonlinear Processes in Photonic Crystals and Periodic Structures * Quantum, Coherent, and Nonlinear Optics * Laser Dynamics * Supernovae and Shocks * Semiconductor Optoelectronics and Teraherts Physics The Conference will be held on board a comfortable boat cruising along the Volga river from Nizhny Novgorod to Saratov and back from July 3 to July 9, 2007. All the relevant information concerned with our meeting, the form for on-line pre-registration included, is also available at the FNP 2007 Web-site: htt://www.fnp.sci-nnov.ru

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ToK - rough notes first day
by Boud Roukema 16 Feb '07

16 Feb '07

witam cosmo-torun http://cosmo.torun.pl/Cosmo/ToK070215RoughNotes The arguments for the Light Dark Matter hypothesis look impressive to me. E.g. the link between the LDM particle mass and the neutrino mass. If you don't understand the notes, well, probably most of it is already in astro-ph, hep-ph, etc. pozdr boud

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sf2a : vos dernieres nouvelles (fwd)
by Boud Roukema 22 Jan '07

22 Jan '07

> ---------- Forwarded message ---------- > Date: Mon, 15 Jan 2007 14:10:27 +0100 > From: SF2A at cesr.fr > To: sf2a at cesr.fr > Subject: sf2a : vos dernieres nouvelles > > Message SF2A No 284 - 15/01/07 > > Sur le web: > http://obswww.unige.ch/sf2a/Messages_CC/284.htx > > ------------------------------------------------------------------------ > 1. Portail emploi SF2A et liste de diffusion ASTRO-JC > 2. "Theses-En-Ligne" - Deposez vos theses pour plus de visibilite! > 3. XXIIIrd IAP Colloque - Juillet 2007 > 4. Summer School on Galaxies - Aout 2007 > 5. Ecole Thematique du CNRS en Mecanique Celeste - Mars 2007 > ------------------------------------------------------------------------ > > > -------------------------------------------------------------------------- > 3. XXIIIrd IAP Colloque - Juillet 2007 > -------------------------------------------------------------------------- > XXIIIrd IAP Colloque - July 2 to July 6, 2007 > "From giant arcs to CMB lensing: 20 years of gravitational distortion" > in Honour of Bernard Fort. > We are please to announce the XXIIIrd IAP colloquium that will held at IAP > between July 2 and 6. > Each year, The Institut d'Astrophysique de Paris organizes a colloquium on > a different topic in cosmology and astrophysics. > 2007 will be the 65th anniversary of Prof. Bernard Fort and the 20th > anniversary of the first papers on the discovery of giant arcs. > To celebrate this event, the XXIIIrd IAP colloquium will focus on > gravitational distortion: rings, giant arcs, weak lensing and cosmic shear, > distortion of CMB anisotropy maps. > More details on the meeting will be published soon. But we invite you > to register already at the following registration page > http://www.iap.fr/scripts/colloques/iap2007/regmenu.asp > > Contact: > email: loc.colloque.2007 at iap.fr > http://www.iap.fr/ > fax: +33 1 44 32 80 01 > > Transmis par Yannick Mellier > > -------------------------------------------------------------------------- > 4. Summer School on Galaxies - Aout 2007 > -------------------------------------------------------------------------- > 1st announcement of a Summer School for Young Researchers on > MULTIWAVELENGTH ANALYSIS OF GALAXY POPULATIONS > http://www.mpa-garching.mpg.de/~magpop/ > > As part of the activities of the Framework 6 EC-funded Research > and Training (RTN) Network on "Multi-wavelength Analaysis of > Galaxy Populations" ( http://magpop.elte.hu/), we are organizing > a Summer School for graduate students and junior postdocs > working on galaxy-related science. > The School will be held from 6-10 August 2007 at Kloster Seeon > http://www.kloster-seeon.de/seeon_engl/index.html > We have reserved rooms for 70 young people at the Kloster and we > will be able to fund local costs for approximately 50 students > from universities and research institutes throughout the > European Union. The final selection will be made by May 2007. > The aim of the School is to provide students with an in > depth insight into research topics of current interest, as well > as instrumentation and techniques that will benefit them in > their later careers. > > Details about how to apply can be found at the School's website: > http://www.mpa-garching.mpg.de/~magpop/ > > > Transmis par Corinne Charbonnel pour Guinevere Kauffmann > > > SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A > > Visitez l'excellent site web de la SF2A: http://www.sf2a.asso.fr ! > Les dernieres informations, les derniers sujets brulants, toutes les > informations concernant la SF2A, les meilleurs liens sur la toile, un > seul et unique site: http://www.sf2a.asso.fr . A vos bookmarks ! > Pour toutes informations complementaires, comme pour faire passer vos > messages, envoyez un mail a Corinne Charbonnel (sf2a at cesr.fr). > Les messages (courts, maximum 20 lignes) doivent me parvenir imperativement > sous forme de texte ASCII simple (les accents et caracteres speciaux doivent > etre supprimes). > MERCI! > > SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A

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Blois 20-26.05.2007 - sf2a : vos dernieres nouvelles (fwd)
by Boud Roukema 22 Jan '07

22 Jan '07

> ---------- Forwarded message ---------- > Date: Mon, 22 Jan 2007 11:15:28 +0100 > From: SF2A at cesr.fr > To: sf2a at cesr.fr > Subject: sf2a : vos dernieres nouvelles > > Message SF2A No 285 - 22/01/07 > > Sur le web: > http://obswww.unige.ch/sf2a/Messages_CC/285.htx > > ------------------------------------------------------------------------ > 1. Appel d'offre International Space Science Institute - Bern CH > 2. Appel d'offre pour le Science Working Group de Hinode (ex-Solar-B) > 3. Ecole des Houches du 23/04/07 au 04/05/07 > 4. Colloque international au Chateau de Blois, France, mai 2007 > 5. Remise du Grand Prix Louis Neel 2006 et manifestation sur > les metiers de la physique - Villeurbanne le 7/02/07 > 6. COROT a livre sa premiere image > ------------------------------------------------------------------------ > > -------------------------------------------------------------------------- > 4. Colloque international au Chateau de Blois, France, mai 2007 > -------------------------------------------------------------------------- > Matter and Energy in the Universe: from nucleosynthesis to > cosmology > > Colloque international au Chateau de Blois, France, May 20-May 26 2007; > http://confs.obspm.fr/Blois2007/index.htm > contact: Ludwik Celnikier at blois.confs(a)obspm.fr > > This is an announcement and call for papers for a conference > celebrating the 50th anniversary of the B2FH and Cameron papers > on stellar nucleosynthesis, and (almost) the 60th annivesary of the > first quantitative calculation of big bang nucleosynthesis. > Topics will include: > > - the contents of the Universe > - abundance determinations > - primordial nucleosynthesis > - stellar thermonuclear nucleosynthesis > - the evolution of galaxies > - energetic particles > - dark matter, dark energy: what do we really know, and what can we surmise > - the future. > > Some financial support may be available for young researchers, and > researchers from Eastern Europe; these latter are advised to send in > an application (form on the web site) as soon as possible. > > Transmis par Ludwik Celnikier

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Porozumienie "Czastki-Astrofizyka-Kosmologia" (fwd)
by Boud Roukema 10 Jan '07

10 Jan '07

hi cosmo-torun, Most of the email below is admin/political stuff about Porozumienie CAK. The interesting bit for most of us is the ToK+PCAK meeting czwartek-poniedziałek 15-19.02.2007 at Hoża: http://cosmo.torun.pl/cgi-bin/twiki/view/Cosmo/ToK > Prosimy o pilne > nadsylanie na nasz adres nazwisk uczestnikow, w tym doktorantow, z > reprezentowanych przez Panstwa osrodków, wraz z tytulami proponowanych > wystapien. > Takze ta sprawa jest pilna. i suggest that people (including doktoranci :) email their names and if they want to give talks, the title of their talk, directly to Zygmunt and Krzysztof. Their emails at fuw.edu.pl are below in (weak) antispam format. However, for communication among us (so we know who is going!), i suggest we add our proposed talk titles on the twiki: http://cosmo.torun.pl/Cosmo/ToK i'll propose a talk on the twins paradox astro-ph/0606559 pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 8 Jan 2007 23:50:41 +0100 (CET) > From: Zygmunt Lalak ... > To: undisclosed-recipients: ; > Subject: Porozumienie "Czastki-Astrofizyka-Kosmologia" > > Szanowni Panstwo, > > W najblizszym czasie powinnismy sfinalizowac podpisywanie Deklaracji > przystapienia do Porozumienia "Czastki-Astrofizyka-Kosmologia" (patrz > zalaczniki). > > Jak Panstwo zapewne wiedza aby wszystkie jednostki uczelniane mogly brac > udzial na rownych prawach co jednostki typu IPJ i IFJ, zostalismy > zmuszeni do odstapienia od oryginalnej idei tworzenia Sieci, na korzysc > Porozumienia. > Wiemy jednak, ze trwaja obecnie prace na zmiana odnosnych > przepisow prawa. W zwiazku z tym tworzymy Porozumienie wg regul > stosowanych przy tworzeniu Sieci (zal 1). Stad prosba do Panstwa o > przedstawienie > odpowiedniej Deklaracji (zal 4 - odpowiednio zmodyfikowany, dolaczony do > tego listu takze jako osobny zbior) Dyrektorowi Instytucji lub Dziekanowi > Wydzialu Uczelni, które Panstwo reprezentuja i uzyskanie odpowiedniego > podpisu. Prosimy nastepnie o przeslanie oryginalu podpisanej Deklaracji na > nasz adres (podajemy ponizej). Prosilibysmy tez o przefaksowanie tego > dokumentu na nasz numer 0226219475. Zalezy nam na tym aby wszystkie > podpisane Deklaracje dotarly do nas do 26go stycznia 2007 (tj do konca > tego semestru) - bardzo prosimy potraktowac te sprawe jako pilna. > > Obecnie Porozumienie nie moze sie starac o dofinasowanie z MNiSW, ale > istnienie Porozumienia moze stanowic podstawe do wystapienia > poszczegolnych instytucji o zwiekszenie srodkow na badania wlasne. > > Zapraszamy serdecznie na warsztaty organizowane na Wydziale Fizyki UW w > ramach projektu ToK PARTICLE PHYSICS AND COSMOLOGY:THE INTERFACE w dniach > 15.02 - 18.02.2007, > oraz do udzialu w planowanym w dn 19.02.2007 spotkaniu > naszego porozumienia Czastki-Astrofizyka-Kosmologia, z udzialem uczestnikow > pokrewnych sieci: Sieci Neutrinowej i Sieci Astrofizycznej. > Prosimy o pilne > nadsylanie na nasz adres nazwisk uczestnikow, w tym doktorantow, z > reprezentowanych przez Panstwa osrodków, wraz z tytulami proponowanych > wystapien. > Takze ta sprawa jest pilna. > > Na zakonczenie dobra wiadmosc: > Minister Kurzydlowski wyrazil zgode na przystapienie Polski do projektow > AppPEC i ASPERA. > > z serdecznymi pozdrowieniami > Zygmunt Lalak i Krzysztof Meissner > > Zygmunt.Lalak fuw.edu.pl, Krzysztof.Meissner fuw.edu.pl > > Adres pocztowy: Instytut Fizyki Teoretycznej UW, Ul. Hoza 69, 00-681 > Warszawa. >

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UMK grant request: Nie-barionowa ciemna materia w Wszechswiecie
by Boud Roukema 21 Nov '06

21 Nov '06

Szanowny Panie Jaskólski, In February this year (2006) Agnieszka Szaniewska and i submitted a UMK internal grant request titled ,,Nie-barionowa ciemna materia w Wszechświecie" but we did not hear any response. Could you please confirm what happened to this application? pozdrawiam serdecznie Boud Roukema, CA-UMK

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Porozumienie Kosmologia i Czastki Elementarne (fwd)
by Boud Roukema 11 Nov '06

11 Nov '06

> ---------- Forwarded message ---------- > Date: Sat, 11 Nov 2006 10:33:32 +0100 (CET) > From: Tok Warsaw <Tok.Warsaw... > Subject: Porozumienie Kosmologia i Czastki Elementarne > > Szanowni Panstwo, > > W dniach 15.-18. lutego 2007 odbedzie sie w Warszawie, na Wydziale Fizyki UW > konferencja ``Particles and Cosmology'' zorganizowana przez Katedre Teorii > Czastek > Elementarnych i Oddzialywan Podstawowych UW. Jest to juz drugie z serii spotkan > zaplanowanych w ramach programu > Transfer of Knowledge (ToK):``Particle Physics and Cosmology: the > Interface'', finansowanego przez EU. Wiecej szczegolow znajda Panstwo pod > adresem http://www.fuw.edu.pl/~tok/. > > Poniedzialek 19. lutego 2007 chcemy przeznaczyc na spotkanie uczestnikow > Porozumienia Kosmologia i Czastki Elementarne. W czasie spotkania > przewidujemy krotkie prezentacje badan prowadzonych w instytutach > uczestniczacych w Porozumieniu, oraz powszechna dyskusje na temat > kierunkow dalszych dzialan. > > Serdecznie zapraszamy wszystkich uczestnikow i sympatykow Porozumienia do > udzialu w spotkaniu oraz w poprzedzajacej je konferencji. > Prosimy o jak najszybsze przekazanie na nasz adres propozycji wystapien oraz > nazwisk uczestnikow a takze tematow do dyskusji. > > Mamy nadzieje spotkac wszystkich Panstwa w lutym na Hozej, > > > Stefan Pokorski > Zygmunt Lalak > Krzysztof Meissner >

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festiwal nauk i sztuki kw 2007 - tzn TERMIN piatek 10.11.2006r.
by Boud Roukema 07 Nov '06

07 Nov '06

hi everyone, Should we try to do a panel discussion on a cosmo subject at the 2007 festiwal nauk i sztuki? http://www.festiwal.torun.pl/zgloszenie/ i could give my standard talk (updated) on cosmic topology, but it would also be fun to talk on something different, e.g. .... (non-baryonic) dark matter. Here's an idea (sort of inspired by Andzrej S's presentation earlier this week): we could each present something which is a different aspect of non-baryonic dark matter: Boud - very short review of evidence for non-baryonic dark matter Andrzej Marecki - supermassive BHs in AGNs, possible relation with AGN life cycle Agnieszka - Integral/SPI possible detection - show the SPI "first image of nbDM?" Zbyszek - Can we detect cosmic strings? - can show some nice grav lensing A2218 etc. This would of course require us to each be *very* short and compact, preferably 12 minutes each rather than 15 minutes, in order to give the audience time for questions. DEADLINE: We have to fill out the form by Friday 10 November. We don't have to actually prepare the discussion until March (since the Festiwal is end of April), but we need to fill out the form now. Co myślicie? Bartek - if you're willing to sort out firewall stuff and install a webcam, you could participate too through gnome-meeting and that way we could have the whole cosmo group together :). It would make about 10 minutes each (5 * 10 = 50 minutes). pozdr boud

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possible visit by JP Luminet - jan 2007
by Boud Roukema 18 Oct '06

18 Oct '06

witam wszystkim, Jean-Pierre Luminet might come to visit us in January. i think that this would be a great chance for people here to have some general discussion on the state of research in cosmic topology with someone other than me. :) http://arxiv.org/find/astro-ph/1/au:luminet/0/1/0/all/0/1 pozdr boud

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przewodniczacy rady: Zralek was: Porozumienie "Kosmologia i czastki elementarne" (fwd)
by Boud Roukema 16 Oct '06

16 Oct '06

> ---------- Forwarded message ---------- > Date: Mon, 16 Oct 2006 08:24:29 +0200 (CEST) > From: Krzysztof Meissner <Krzysztof.Meissner... > Subject: Re: Fw: Porozumienie "Kosmologia i czastki elementarne" > > Szanowni Panstwo, > > W wyborach na przewodniczacego Rady Porozumienia oddano 12 glosow z czego: > > 9 na prof. Marka Zralka > 3 na prof. Mariusza Dabrowskiego > > Dziekujemy za udzial w wyborach. > Zapraszamy jeszcze raz wszystkich do IFT UW na poniedzialek 19.02.2007 na > ogolne spotkanie Porozumienia. > > Serrdecznie pozdrawiamy > Zygmunt Lalak i Krzysztof Meissner >

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Re: Porozumienie "Kosmologia i czastki elementarne"
by Boud Roukema 15 Oct '06

15 Oct '06

Cześć Krzysztof, On Mon, 9 Oct 2006, Krzysztof Meissner wrote: > Szanowni Panstwo, > > Zgodnie z decyzja wszystkich uczestnikow, `Porozumienie o > wspolpracy naukowej w dziedzinie badan teoretycznych "Czastki - > astrofizyka - kosmologia" ' ma posiadac strukture sieci tzn. miec > koordynatora i rade naukowa. Jak Panstwo wiecie, koordynatorem zostal > jednoglosnie wybrany prof. Stefan Pokorski. Do objecia funkcji > przewodniczacego rady zgloszono dwoch kandydatow (podajemy w > kolejnosci alfabetycznej): > > prof. Mariusz Dabrowski (Uniw. Szczecinski) > prof. Marek Zralek (Uniw. Slaski) W CA-UMK głosimy dla Mariusza Dąbrowskiego jako przewodniczący rady. pozdr boud > W zwiazku z tym proponujemy, by w celu wyboru kazdy z osrodkow wskazal w > liscie przeslanym na adres > Krzysztof.Meissner(a)fuw.edu.pl > jednego z kandydatow. Czekamy na listy do niedzieli 15.10. i w poniedzialek > 16.10. podamy do Panstwa wiadomosci wynik glosowania (lub, w przypadku > rownej liczby glosow, zarzadzimy ponowne glosowanie). > > Serdecznie pozdrawiamy > Zygmunt Lalak i Krzysztof Meissner > > > > > -- >

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Porozumienie "Kosmologia i czastki elementarne" (fwd)
by Boud Roukema 15 Oct '06

15 Oct '06

hi cosmo-torun, We as the CA-UMK group of the cosmo-pp network need to choose, by this weekend (15.10.06), between Mariusz Dąbrowski and Marek Zrałek as "przewodniczący" of the cosmo-pp network. The vote seems to be confidential, though each group presumably has its own way of deciding. i suggest informal discussion by whatever means (email/face-to-face/...) and attempts to get informal consensus - consensus probably better *not* on public lists/twiki if it's about personal stuff of the two candidates, but IMHO it can be public if it's a meta-level question (e.g. should we ask questions to the two candidates?) i suggest the following procedure (since we won't necessarily get consensus): * everyone who wants to "vote" email me his/her vote before the deadline * i will publish the names of the people who vote and which candidate has the majority - if it's 50:50 i'll toss a coin. If someone wants a more formal or structured process, then please propose it. Both candidates seem fine to me, so i don't expect this to be terribly controversial, but as a matter of principle, i prefer it to be more participatory rather than less participatory. After all, in the long term this sort of thing does have an effect and jobs and cosmology funding. See http://arxiv.org: hep-ph, astro-ph, gr-qc for Mariusz' and Marek's scientific work. For their experience as moderators, i guess you need to look elsewhere. pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 9 Oct 2006 14:45:44 +0200 (CEST) > From: Krzysztof Meissner... > To: Stefan Pokorski.. > Subject: Porozumienie "Kosmologia i czastki elementarne" > > Szanowni Panstwo, > > Zgodnie z decyzja wszystkich uczestnikow, `Porozumienie o > wspolpracy naukowej w dziedzinie badan teoretycznych "Czastki - > astrofizyka - kosmologia" ' ma posiadac strukture sieci tzn. miec > koordynatora i rade naukowa. Jak Panstwo wiecie, koordynatorem zostal > jednoglosnie wybrany prof. Stefan Pokorski. Do objecia funkcji > przewodniczacego rady zgloszono dwoch kandydatow (podajemy w > kolejnosci alfabetycznej): > > prof. Mariusz Dabrowski (Uniw. Szczecinski) > prof. Marek Zralek (Uniw. Slaski) > > W zwiazku z tym proponujemy, by w celu wyboru kazdy z osrodkow wskazal w > liscie przeslanym na adres > Krzysztof.Meissner(a)fuw.edu.pl > jednego z kandydatow. Czekamy na listy do niedzieli 15.10. i w poniedzialek > 16.10. podamy do Panstwa wiadomosci wynik glosowania (lub, w przypadku > rownej liczby glosow, zarzadzimy ponowne glosowanie). > > Serdecznie pozdrawiamy > Zygmunt Lalak i Krzysztof Meissner

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Re: Fw: Porozumienie "Kosmologia i czastki elementarne" (fwd)
by Boud Roukema 05 Oct '06

05 Oct '06

hi cosmo-torun, If nobody has any objections, i'll send the following email to the "Rozumienie" that Marek Zrałek is coordinating. Reminder: this is cosmologists/particle physicists organising a "pre-formal" network in Poland, which can later be joined to create a European network, in order to get research funding for cosmologyu/particle physics. At the moment it's only "informal" with the idea of waiting until a new ustawa comes through, but the cosmologists from the different institutes are writing sort of formally. We're asked to respond by tomorrow (sorry about not writing earlier) about "votes" (or proposals) for a head of the council and a coordinator - several people have proposed Stefan Pokorski as council head and Marek Zrałek as coordinator. You can see what they do (hep-ph - high-energy physics phenomenology) here: Marek: http://arxiv.org/find/hep-ph/1/au:+zralek/0/1/0/all/0/1 Stefan: http://arxiv.org/find/hep-ph/1/au:pokorski/0/1/0/all/0/1 i think their scientific track records speak for themselves. If noone objects by tomorrow, i'll post the text below to the (offlist) cc: list of the porozumienie. pozdr boud ---------------------------------------------------------------------- Porozumienie "Kosmologia i czastki elementarne" Drogie Koleżanki i drodzy Koledzy, Proponuję w imeniu Centrum Astronomicznego Uniwersytetu Mikołaja Kopernika Prof. Marka Zrałka na stanowisko Przewodniczacego Rady i Prof. Stefana Pokorskiego na stanowisko Koordynatora. Serdecznie pozdrawiam wszystkich uczestnikow Porozumienia Boud Roukema, CA-UMK ----------------------------------------------------------------------

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draft title/abstract for seminar
by Boud Roukema 04 Oct '06

04 Oct '06

witam cosmo-torun, Andrzej Kus mi prosił zrobić seminarium poniedziałek 9.10.2006. Jeśli ktoś chce sugerować poprawki, proszę mów. Abstrakt jest raczej długi, ale jest trudny zrobić krótkiejszy dla osoby nie znając temat... Oczywiście, będę też iść trochę na wyniki WMAP itd, ale nie widzę, że muszę to mówić w abstrakcie. pozdr boud Title 2006 Nobel prize: Cosmological black body and density perturbations Abstract The standard hot big bang model became widely accepted as a serious model in 1965 after the discovery of the 3 Kelvin primordial background radiation (CMB), but it was still regarded sceptically by many astronomers. During the 1980s and early 1990s, the model's prediction that the background radiation should have a nearly perfect Planckian black body spectrum was only weakly tested. The other untested prediction of the model was that the Universe is not perfectly uniform, it needed density perturbations which could gravitationally collapse to form clusters of galaxies and galaxies and stars. The COBE satellite, coordinated by Smoot, Mather and Wilkinson, revealed that the CMB black body was more perfect than any black body created artificially in Earth based laboratories. Moreover, in its map of the CMB, it detected 0.001% fluctuations in the temperature - revealing the density perturbations necessary to form galaxies. These results spectacularly confirmed two of the basic physical predictions of the hot big bang model.

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ESO-ESA working group on fundamental cosmology: report
by Boud Roukema 03 Oct '06

03 Oct '06

http://www.stecf.org/coordination/esa_eso/wg.php?working_group=cosmology ESA-ESO WG on Fundamental Cosmology Working Group Members: George Efstathiou John Ellis Bruno Leibundgut Simon Lilly Yannick Mellier John Peacock (chair) Peter Schneider (co-chair) Abstract of final report In September 2003, the executives of ESO and ESA agreed to establish a number of working groups to explore possible synergies between these two major European astronomical institutions on key scientific issues. The first two working group reports (on Extrasolar Planets and the Herschel--ALMA Synergies) were released in 2005 and 2006, and this third report covers the area of Fundamental Cosmology. The Working Group's mandate was to concentrate on fundamental issues in cosmology, as exemplified by the following questions: * What are the essential questions in fundamental cosmology? * Which of these questions can be tackled, perhaps exclusively, with astronomical techniques? * What are the appropriate methods with which these key questions can be answered? * Which of these methods appear promising for realization within Europe, or with strong European participation, over the next ~15 years? * Which of these methods has a broad range of applications and a high degree of versatility even outside the field of fundamental cosmology? >From the critical point of view of synergy between ESA and ESO, one major resulting recommendation concerns the provision of new generations of imaging survey, where the image quality and near-IR sensitivity that can be attained only in space are naturally matched by ground-based imaging and spectroscopy to yield massive datasets with well-understood photometric redshifts (photo-z's). Such information is essential for a range of new cosmological tests using gravitational lensing, large-scale structure, clusters of galaxies, and supernovae. All these methods can in principle deliver high accuracy, but a multiplicity of approaches is essential in order that potential systematics can be diagnosed -- or the possible need for new physics revealed. Great scope in future cosmology also exists for ELT studies of the intergalactic medium and space-based studies of the CMB and gravitational waves; here the synergy is less direct, but these areas will remain of the highest mutual interest to the agencies. All these recommended facilities will produce vast datasets of general applicability, which will have a tremendous impact on broad areas of astronomy. Full report (2.4Mb pdf): http://www.stecf.org/coordination/esa_eso/cosmology/report_cover.pdf

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smoot/mather nobel
by Boud Roukema 03 Oct '06

03 Oct '06

hi everyone, There's a media thread here for the Smoot/Mather Nobel prize: http://cosmo.torun.pl/pipermail/cosmo-media/2006-October/thread.html i don't want to spam everyone, so please just update the twiki: http://cosmo.torun.pl/cgi-bin/twiki/view/Cosmo/MediaNobelSmootMather or subscribe to and respond on cosmo-media. A tv crew will be here (KRA) around 15.30. pozdr boud

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Marseille June 2007: GRB+cosmology conference
by Boud Roukema 21 Sep '06

21 Sep '06

hi cosmo-torun, Two interesting conferences in Marseille... pozdr boud > ---------- Forwarded message ---------- > Date: Tue, 19 Sep 2006 11:14:14 +0200 > From: SF2A(a)cesr.fr > To: sf2a(a)cesr.fr > Subject: sf2a : vos dernieres nouvelles > > Message SF2A No 266 - 19/09/06 Sur le web: http://www.ast.obs-mip.fr/users/contini/SF2A/messages/266.htx ------------------------------------------------------------------------ 2. "Energetics events in the universe..." - Marseille, 25-28/06/07 4. "Towards the European ELT (E-ELT) - Marseille, 27/11-01/12/06 ------------------------------------------------------------------------ ------------------------------------------------------------------------ 2. "Energetics events in the universe..." - Marseille, 25-28/06/07 ------------------------------------------------------------------------ ENERGETIC EVENTS IN THE UNIVERSE: FROM PHYSICS TO COSMOLOGY 25-28 June 2007, Marseille, France This conference is aimed at reviewing the physics of energetic objects and processes in the Universe, and their impact on cosmology and cosmic evolution. Scientific rationale: Energetic events in terms of physical processes or specific objects are incomparable tools to probe the Universe and its components. They are signature of dramatic processes in the primordial Universe with gravitational waves consecutive to an inflationary phase or in the present one with possible annihilation of dark matter. They are bright candles, like SNe or GRBs, allowing to stride space and look back in time on prodigious scales. They are beacons whose light reveals both their hosts and matter along their path. As such, the aim of this conference is to explore all these aspects focusing on the physics of objects and processes in the perspective of their use for cosmology and cosmic evolution (which are the titles of our 3 sessions). Sessions will be devoted to these topics with both reviews and short contributions. INVITED REVIEWERS SESSION I: PHYSICS OF OBJECTS AND PROCESSES Inflation as a paradigm is now part of the cosmological model. It is the most energetic period of the Universe. What is the underlying physics? What are predictions like those e.g concerning primordial GW which renders specific models falsifiable? What are the observational prospects? * Pre Big Bang period, inflation, induced primordial GW : Dr Mukhanov (Munich University) * Is inflation falsifiable with foreseen instrumentation ? : Dr A. Cooray (UC Irvine) Dark matter is probably unavoidable from galaxy and cluster dynamics and LSS growth. It is still a challenge to know what it is, and what the different detection methods can do to identify its nature. The theoretical predictions and experimental perspectives will be addressed with a special attention on high energy annihilation products * Dark matter annihilation and its products : Dr P. Salati (LAPP- IN2P3) * Complementarity between Direct and indirect Dark Matter searches and Collider Experiments : Dr Sadoulet (Berkeley) Supernovae and GRBs are produced by the cataclysmic end of stars. SN Ib/C, SNII and long GRBs are produced by the core collapse of massive stars and are intrinsically linked. SNIa and short GRBs are respectively produced by the collapse of a white dwarf and by the collapse of two neutron stars. Reviews on the origin and on the connection between these different phenomena will be presented. The impact on the cosmological applications of the long GRBs and SNIa will be emphasized. * The physical mechanisms at play in explosive stars : Dr P. Meszaros (Penn. State University) * Supernova and GRB connection : Dr P. Mazzali (INAF - Trieste) SESSION II : IMPACT ON COSMOLOGY The recent acceleration expansion of the universe has been put on firm basis using SNI. Other probes are however needed to perform precision cosmology, in particular to higher z (are other acceleration phases possible?). Reviews will present the state of art on how SN and GBR would be more and more "standardizable " as well as a status on present searches and future prospects. * Can we standardize the GRBs ? : Dr L. Amati (INAF - Bologna) * Latest GRBs observations for cosmology : a status report and future prospects : Dr Berger (Carnegie) Towards a better SN standardization: beyond stretch and color corrections : Dr L. Wang (LBL) * Status on present searches and observational perspectives in using SN's for cosmology : A. Ealet (CPPM-IN2P3) SESSION III : IMPACT ON COSMIC EVOLUTION Even more than QSOs, GRB seem to be the brightest and most distantsources in the Universe. They are thus suitable to probe in details the intergalactic medium at all epochs, including the re-ionization, on which they themselves impact. They are also the first star-forming objects, providing first hints on the star formation history of the Universe. * Probing cosmic chemical evolution with GRB's : Dr Prochaska (Lick Observatories) * Impact on cosmic re-ionization : Dr Ferrara (SISSA) Science Organizing Committee : * M. Boer (Observatoire de Haute Provence / OAMP) * B. Degrange (Laboratoire Leprince-Ringuet) * N. Gehrels (Goddard Space Flight Center) * J. Hu (NAOC, Beijing) * P. Madau (University of California) * P. Natarajan (University of Yale) * J. Paul (APC/CEA) * S. Perlmutter (Lawrence Berkeley Laboratory) * M. Vietri (University of Roma 3) * D. York (University of Chicago) Conference contact: marseille2007(a)oamp.fr Local Organizing Committee: * S. Basa (LAM) * J.P. Kneib (LAM) * V. Le Brun (LAM) * R. Malina (LAM) * A. Mazure (LAM) * C. Marinoni (CPT) * C. Tao (CPPM) ------------------------------------------------------------------------ 4. "Towards the European ELT (E-ELT) - Marseille, 27/11-01/12/06 ------------------------------------------------------------------------ Towards the European Extremely Large Telescope (E-ELT) - Marseille, Nov. 27 - Dec 01 The conference includes a presentation of the E-ELT project status by ESO and two sessions dedicated to ELT science and instrumentation. The scientific organizers of the conference are ESO, LAM and OPTICON. Deadlines for abstract submission and funding requests is September 30th. People are advised to book their hotels as soon as possible. The conference venue is Marseille, Palais du Pharo. See the web site of the conference for further details at --> http://www.elt2006.org SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A Visitez l'excellent site web de la SF2A: http://www.sf2a.asso.fr ! Les dernieres informations, les derniers sujets brulants, toutes les informations concernant la SF2A, les meilleurs liens sur la toile, un seul et unique site: http://www.sf2a.asso.fr . A vos bookmarks ! Pour toutes informations complementaires, comme pour faire passer vos messages, envoyez un mail a Thierry Contini (sf2a(a)cesr.fr). Les messages doivent me parvenir imperativement sous forme de texte ASCII simple (les accents et caracteres speciaux doivent etre supprimes). MERCI! SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A----SF2A

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CFHT deep surverys - LETTRE DU PNG Num 52 (fwd)
by Boud Roukema 19 Sep '06

19 Sep '06

cześć cosmo-torun, Mamy nowy doktorant :) - chyba będzies sam się przedstawić do wszystkich... ? Kilka słów o co chcesz zrobić? W każdym bądź razie, myślę, że te spotkanie mógł być *bardzo* interesujące dla tematu. Cytat na dolu jest trochę w (fr) ale większość jest w (en). Najważniejszy jest tu: > A national (French) CFHTLS users meeting will be organised on > November 6-7 , 2006 in Paris (IAP). Formalnie jest tylko ,,narodowy", ale język angielski ewidentnie będzie dużo używany - tytuły wykłady są wszystko w (en): http://terapix.iap.fr/article.php?id_article=624 i też reklama ,,wewnętrzna" francuska. Więc chyba wielki patriotyzm nie będzie ;) - raczej pryorytet jest nauka. Możemy mówić o możliwości finansowanie poza listy - niestety, zawsze jest to sprawa administracyjna nudna... Jest to tylko krótki - 2 dni - spotkanie, ale to polecam. pozdr boud ---------- Forwarded message ---------- > Date: Mon, 4 Sep 2006 18:26:29 +0200 > From: PNG paduc cea fr > To: boud... > Subject: LETTRE DU PNG Num 52 LETTRE DU PNG Num 52 -- 4 septembre 2006-- LETTRE DU PNG Num 52 ----------------------------------------------------------------------- 2. Date limite de dépot des demandes de temps CFHT pour 2007A Le TCFH est ouvert aux demandes de temps pour 2007A. La date limite de depot des demandes est le 21 septembre 2006 - 24:00 UTC A noter que la camera infrarouge WIRCam est offerte pour la deuxieme fois a de Grands Programmes en 2007A. Les informations necessaires sur les instruments, les Grands Programmes WIRCam et la soumission des demandes sont disponibles depuis la page web du TCFH: http://www.cfht.hawaii.edu/ et depuis celle du Comité Francais du Telescope Canada France Hawaii (CFTCFH): http://wwwgepi.obspm.fr/cfcfht/FTAC/ 3. Réunion des utilisateurs français du CFHTLS A national (French) CFHTLS users meeting will be organised on November 6-7 , 2006 in Paris (IAP). If you planned to attend and/or present results, please send an email to mellier(a)iap.fr and hjmcc(a)iap.fr . This meeting will be an opportunity to summarize the status of the surveys (Deep, Wide, Very Wide), to show users scientific results and to express users needs. The meeting will be a preparation for the CFHTLS progress report the Steering Group will prepare for the May 2007 SAC meeting and for the next CFHT Users meeting planned by May 2007 in Marseille (likely May 9-11). During this meeting we will have a session on the future surveys, beyond CFHTLS, with CFHT. Information: http://terapix.iap.fr/rubrique.php?id_rubrique=223 Enfin, quelques infos moins recentes concernant le CFHTLS mais qui, parues juste avant la periode estivale, ont pu vous echapper: 4. Redshift photometriques du CFHTLS The photometric redshifts computed using the TERAPIX-T0003 photometric catalogues are available on line. They have been calibrated using 3200 spectroscopic redshifts from the VLT-VIRMOS deep survey. Information: http://terapix.iap.fr/article.php?id_article=586 5. Worldwide CFHTLS Data Releases Since Jun. 30, 2006, all raw data and Elixir data products obtained from May 30, 2003 to May 29, 2004 are publicly available and open to world access at CADC. The first worlwide release of stacks and catalogs produced by Terapix will happen in February 2007. It will consist of the T0003 release. Information: http://www.cfht.hawaii.edu/Science/CFHLS/cfhtlsdatarelease.html

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links to pico-cosmology decision at IAU
by Boud Roukema 26 Aug '06

26 Aug '06

witam cosmo-torun Probably everyone has already heard of the pico-cosmology decision in Prague, but i thought it would be nice to have the direct links (rather than indirect stuff through corporate media...): Resolutions 5A and 6A were passed: http://www.iau2006.org/mirror/www.iau.org/iau0603/index.html i assume this means that resolutions 5B and 6B were not passed: http://www.iau2006.org/mirror/www.iau.org/iau0602/index.html i wonder if someday the IAU will need vote on cosmology conventions without the "pico-" prefix... ;) pozdr boud

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MEiN (byly KBN) non-grant 2006 :(
by Boud Roukema 31 Jul '06

31 Jul '06

hi everyone, Here's my summary of our grant rejection for this year, with my one sentence summaries - the full scans are linked on the twiki: http://cosmo.torun.pl/Cosmo/AdminGranty 2006 * referee 1: score 4 * referee 1: report - not possible to reject the hypothesis, so not worth funding * referee 2: score 7 * referee 2: report - the project will not give a final answer to the topology of the Universe * referee 3: score 6.5 * referee 3: report - researching the PDS model no longer has any sense because of the [unrefereed] article AstroPh:0604616 Summary: unless there is a Nobel prize for discovering the topology of the Universe, research into the subject will not be funded. The astronomy community does not see fundamental research as a high priority. Maybe we should get jobs in a Patent Office? ;) Apparently not much has changed since 100 years ago... Anyway, it's true we need to publish our followup paper to RLCMB04. Which is in progress... pozdr boud

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Re: Fw: spotkanie w celu utworzenia sieci przy okazji wizyty ApPEC SC
by Boud Roukema 27 Jul '06

27 Jul '06

Cześć Marek, On Mon, 17 Jul 2006, zralek wrote: > > Szanowni Państwo > > Pozwalam sobie przeslac wspolny list, ktory powstał na zakonczenie spotkania > ApPEC Steering Committee w Warszawia. Chciałbym aby informacja ta > dotarła do wszyskich osób zainteresowanych uczestnictwem w opisanych > ponizej sieciach naukowych. Przepraszam za nadgorliwosc jezeli juz ten list > dotarl > do Panstwa. > Prosze wszystkie osoby pragnace uczestniczyc w przyszłych pracach sieci > "POLSKA SIEC KOSMOLOGII I ODDZIAŁYWAŃ FUNDAMENTALNYCH " > o szybka odpowiedz (w miare mozliwosci jeszcze w tym tygodniu) > na moj adrese-mailowy. Oczywiście się interesuję. Toruńska grupa kosmologii jest mała, ale próbujemy się koordynować z innymi kosmologami w regionie: http://cosmo.torun.pl/pipermail/cosmo-pl/ http://cosmo.torun.pl/Cosmo/CosmoPlMeeting2006 > Marek Zrałek > > > > >> Szanowni Panstwo, >> >> chcielibysmy krotko podsumowac spotkanie inicjujace powstanie >> nowych krajowych sieci naukowych, jakie mialo miejsce >> przy okazji ApPEC Steering Committee Meeting w Warszawie >> 3.07.2006r. Uczestniczylo w nim 38 osob reprezentujacych >> 11 instytutow z calego kraju. W wyniku dyskusji postanowiono >> utworzyc 3 sieci o roboczych nazwach: >> >> 1. Polska Siec Fizyki Neutrin (prof.D.Kielczewska) >> 2. Polska Siec Astrofizyki Czastek (dr hab.G.Wrochna) >> 3. Polska Siec Kosmologii i Oddzialywan Fundamentalnych (prof.M.Zralek) >> >> (W nawiasach podane sa nazwiska "inicjatorow" - osob >> odpowiedzialnych na obecnym etapie za tworzenie sieci) >> >> Bardzo prosimy wszystkie instytucje zainteresowane przystapieniem >> do ktorejkolwiek z trzech wymienionych sieci o przeslanie informacji >> do odpowiedniego "inicjatora" i podanie swojego przedstawiciela >> do Rady Sieci do dnia 17.07.2006, godz. 18:00. W Toruniu mamy (mniej-więcej) pięć kosmologów: Boud Roukema (ja) + Andrzej Marecki + Andrzej Kus + doktoranci Bartosz Lew + Agnieszka Szaniewska (dodawałem Andrzej Kus dla projektu OCRA - który w SZ będzie mieć rolę kosmologiczną) Mówię ,,mniej-więcej", bo też są doktoranci pracują na AGNów, ale blisko końca doktoratu, i też to zależe gdzie jest granica ,,kosmologia/astro-ekstragalaktyczna"... Lepiej mi pisać jako ,,przedstawicielem" CA-UMK (Centrum Astronomii - UMK) zamiast nikogoś, ale będę pytać do grupy czy ma inny ,,kandydaci" dla rolę... Tu piszę cc do naszej grupy dyskusyjnej: http://cosmo.torun.pl/mailman/listinfo/cosmo-torun Andrzej, Andrzej, Bartek, Agnieszka lub inny na cosmo-torun - jeśli dobrze rozumiem, Marek Zrałek chce ,,przedstawiciel" toruński dla ,,Rady Sieci" w ,,Polskim Sieci Kosmologii i Oddziaływań Fundamentalnych", i potrzeba odpowiedź dopiero do ... wczoraj... Marek Zrałek jest ktoś z Uniw Śląsku, który robi neutrina: http://arxiv.org/find/hep-ph/1/au:+zralek/0/1/0/all/0/1 Czy ktoś inny niż mnie chce być nasze ,,przedstawiciel" toruński w sieci? (Może być, nie koniecznie jestem dyktatorem grupy. ;) Jeśli nikt inny chce, chyba to znacze, że to ja. >> Na spotkaniu, czesc obecnych zadeklarowala zainteresowanie >> przystapieniem do sieci (jednej lub wiecej) i juz wytypowala >> przedstawicieli swoich jednostek lub tez osoby odpowiedzalne >> za wylonienie przedstawicieli. >> >> Ustalono, ze Rade Sieci sieci tworza przedstawiciele poszczegolnych >> jednostek. Rada Sieci wybiera Koordynatora Sieci i Przewodniczacego >> Rady Sieci. (Podzial kompetencji jak miedzy premierem a prezydentem. >> W niektorych sieciach jest to jedno stanowisko.) Rada ustala tez >> kadencyjnosc Rady i Koordynatora i ustala szczegoly dzialania Sieci. >> >> Wybor Koordynatora jest jednoznaczny z wyborem jednostki koordynujacej. >> Jednostka koordynujaca bierze na siebie ciezar administracyjnej >> obslugi sieci i zapewnienia przeplywu informacji miedzy czlonkami >> (strony WWW, listy mailowe itp.) Polecam strona wiki. Wiemy jak (w po angielski, dla strony naukowych) wikipedia już jest na sam poziom jak Encyclopedia Britannica - chociaż jest strona wiki, gdzie ktokolwiek z dostępem do sieci może edytować. To fakt eksperymentalny, nie tylko teoria. >> Za przeprowadzenie wyborow odpowiedzialni sa "inicjatorzy" sieci. >> Tryb przeprowadzenia wyborow zostanie ustalony po skompletowaniu >> Instytucji w kazdej sieci i wytypowaniu przedstawicieli do Rady Sieci. >> >> Pierwszym zadaniem Koordynatorow bedzie przygotowanie umow >> (deklaracji czlonkostwa) o ustanowieniu sieci oraz zorganizowanie >> ich podpisania. W przypadku instytutow uczelnianych strona umowy >> jest Wydzial lub Instytut (np. Wydzial Fizyki Uniwersytetu >> Warszawskiego), ale dokument podpisuje Rektor. >> >> Kolejnym zadaniem Koordynatorow bedzie przygotowanie wystapien >> do MNiSzW o finansowanie sieci. Termin skladania wnioskow >> uplywa 30 wrzesnia, wiec powyzsze akcje nalezy rozpoczac niezwlocznie. >> >> D.Kielczewska, G.Wrochna, M.Zralek >> >> P.S. Referaty podsumowujace badania w Polsce w powyzszych >> dziedzinach mozna znalezc na stronach: >> http://www.fuw.edu.pl/~krawczyk/appec/ >> http://www.fuw.edu.pl/~krawczyk/appec/nsession.php >> >> a zdjecia z imprezy: >> http://ipj.fuw.edu.pl/ApPEC06/ pozdr boud

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hi money
by Elise Middleton 22 Jun '06

22 Jun '06

Thu, 22 Jun 2006 06:27:32 -0500 %INTRO Over 80 de%FILTERgree selection. Get your online deg%FILTERree in less then 2 weeks no required tests, classes, books, or interviews! Which one is right for you ? %FILTERAccounting %FILTERBusiness %FILTERCriminal%FILTER justice %FILTEREduc%FILTERation %FILTERHealth %FILTERTechnology call us now for more info %NUMBER (7 days a week, 24 hours a day) %END Loretta Tanner %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES. %CUSTOM_SENTENCES

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Bouojnr!
by Corina Marquez 18 Jun '06

18 Jun '06

Sun, 18 Jun 2006 11:12:31 -0800 guess what? Over 80 de:gree selection. Get your online deg:ree in less then 2 weeks no required tests, classes, books, or interviews! Which one is right for you ? :Accounting :Business :Criminal: justice :Educ:ation :Health :Technology call us now for more info 1:2:0:6-984-4433 (7 days a week, 24 hours a day) Have a Good Day Shaun Britton But, I spent the next three weeks making a piece of simple software for her son to her specifications. While I was at it, I put 4-8 pictures on the screen as well. The simple program was finished and ready for her child to see. As I was presenting it, the other children in my classroom were pushing each other to get to the computer screen to touch that Touch Window and hear the word spoken again and again. I looked at these kids and was amazed. There was no music, no animation, nothing cute about this program at all, just real pictures with real words. I was stunned. I just watched the children. Within 10 minutes, several children who had never said a word in their life, made approximations of several words. I was hooked.. Have the managers already loved shouting?. 10. Ninety six bottles of beer, three a's, three b's, one c, two d's, thirty six e's, three f's, two g's, seven h's, eleven i's, one j, one k, six l's, one m, twenty n's, twelve o's, one p, one q, six r's, twenty eight s's, nineteen t's, seven v's, seven w's, six x's, and five y's on the wall.. Weren't those plumbers practicing talking last month?. 14. Ninety six bottles of beer, three a's, three b's, one c, two d's, twenty eight e's, seven f's, three g's, eight h's, thirteen i's, four l's, sixteen n's, nine o's, nine r's, twenty six s's, twenty t's, four u's, four v's, six w's, five x's, and five y's on the wall. . Did those bus drivers regret singing?. Joseph has just remembered walking.. Mr. Hanson isn't practicing working.. I am not enjoying skiing among the trees at the moment.. Don't you regret eating about once a week?. I didn't dislike cooking at home.. Some store clerks like working in London.. Many bartenders like driving every other day.. i need to get a pedicure. my feet smell and itch. 12. Ninety six bottles of beer, three a's, three b's, one c, two d's, thirty three e's, seven f's, three g's, nine h's, twelve i's, one j, one k, six l's, fifteen n's, eleven o's, eight r's, twenty five s's, twenty two t's, two u's, six v's, eight w's, four x's, and five y's on the wall.. Don't you practice dancing as often as possible?

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spotkanie
by Łukasz Bukowiecki 05 Jun '06

05 Jun '06

Mi najbardziej pasowałoby spotkanie w przyszłym tygodniu we wtorek o godzinie powiedzmy gdzieś między 13-20, bo wtedy będe w Piwnicach. Co do tematu spotkan, to postaram się zebrać rzeczy, których wyjasnienie byłoby dla mnie bardzo ważne (interesujące) Pozdrawiam ---------------------------------------------------------------------- Poznaj Stefana! Zmien komunikator! >>> http://link.interia.pl/f1924

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down in a rut and need a way out? we can help
by Daryl Rhoades 04 Jun '06

04 Jun '06

Sun, 04 Jun 2006 12:48:59 -0800 MIME-Version: 1.0 Content-Type: text/plain X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.3790.224 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.224 Boe, Look at this! If you are like most people, you are more than qualified with your experience, but you are lacking that prestigious piece of paper known as a DIPLO|MA that is often the passport to success. Call us TODAY AND GIVE YOUR LIFE A CHANCE 1-206-600-4902 24 hours a day, 7 days a week including Sundays and Holidays Much Success

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wtorek 25.05.2006 13.00g @KRA: prezentacji/dyskusji nBDM
by Boud Roukema 24 Apr '06

24 Apr '06

Cześć wszystkim, Jutro wtorek (25.04.2006r) o 13.00g Łukasz i Agnieszka będą wyjaśnić gdzie są na temacie nie-barionowej ciemniej materii. :) Miejsce: KRA (albo sala seminarium albo mój biuro) Będzie więcej stylu warsztat niż ,,wstęp dla początkowych", więc osoby, którze zapomniali temat (lub jeszcze nie znają temat) są polecane czytać podstawy: http://cosmo.torun.pl/cgi-bin/twiki/view/Cosmo/NonBaryonicDarkMatter na jutrze boud

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Britannica vs. Wikipedia
by Andrzej Marecki 30 Mar '06

30 Mar '06

Which source is more error prone: Britannica or Wikipedia? Read: http://www.nature.com/nature/journal/v440/n7084/full/440582b.html -- a.m.

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[Cosmo-pl] WMAP 3yr data - Omega_tot \approx 1.010-1.015 :))))) (fwd)
by Boud Roukema 17 Mar '06

17 Mar '06

hi everyone, i don't know if everyone on cosmo-torun is on cosmo-pl. Anyway, i sent the following to cosmo-pl. pozdr boud > > > ---------- Forwarded message ---------- > Date: Fri, 17 Mar 2006 16:25:42 +0100 (CET) > From: Boud ... > To: cosmo-pl at ... > Subject: [Cosmo-pl] WMAP 3yr data - Omega_tot \approx 1.010-1.015 :))))) > > Witam cosmo-pl, > > The 3-year WMAP data is now available: > http://lambda.gsfc.nasa.gov/product/map/dr2/ilc_map_get.cfm > > As expected from the Poincare Dodecahedral Space analyses, e.g. > http://arxiv.org/abs/astro-ph/0310253 Luminet et al. > http://arxiv.org/abs/astro-ph/0402608 Toruń > http://arxiv.org/abs/astro-ph/0412569 Aurich Lustig Steiner > http://arxiv.org/abs/astro-ph/0503014 Gundermann > http://arxiv.org/abs/astro-ph/0504656 Aurich Lustig Steiner > > the estimates of Omega_total remain in the range 1.010-1.020. :)))) > > Spergel et al find: > > http://lambda.gsfc.nasa.gov/product/map/dr2/pub_papers/threeyear/parameters… > > Omega_tot = > 1.015 (+0.020,-0.016) WMAP-3yr + SNLS (supernova legacy survey) > 1.010 (+0.016,-0.009) WMAP-3yr + HST key project on H_0 > > No matter how hard people try to combine different data sets, it seems > that nobody can get Omega_tot much closer to 1.000 (except by assumption). > > In the conclusion, section 9, page 61 of Spergel et al., you'll see > that after people like me have repeated ad infinitum in many, many > seminars etc that WMAP does not imply a flat Universe, it only > implies a "nearly flat Universe", finally, Spergel et al. have started > using this expression: > > "The WMAP data are consistent with nearly flat universe". > > :) > > Anyway, hopefully in the next week, i and the other people who have > volunteered ;) to help organise a small, "polish cosmology" > workshop/meeting in Toruń, probably in May, will send out a > "pre-registration" announcement... > > > pozdr > boud > > _______________________________________________ > Cosmo-pl mailing list > Cosmo-pl at cosmo.torun.pl > http://cosmo.torun.pl/mailman/listinfo/cosmo-pl >

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wmap2
by Bartosz Lew 16 Mar '06

16 Mar '06

hi all, the wmap 2nd year data finally are abaut to be released - today :] http://www.bautforum.com/showthread.php?t=23857&page=10 pozdr. bartek

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money (FNP)
by Boud Roukema 23 Feb '06

23 Feb '06

hi cosmo-torun, Ajk recommends that we consider looking at the many different sorts of funding possible from the FNP: http://www.fnp.org.pl/ Two applications made to FNP last year for Eastern European cosmology visitors to spend some time here were rejected. pozdr boud

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the shape of the universe (fwd)
by Boud Roukema 20 Feb '06

20 Feb '06

hi everyone, We have a media question :). i don't want to spam people, so anyone interested, please respond on cosmo-media@ ... rather than cosmo-torun. Below are my proposed "compact" answers. Any corrections before i respond "officially"? Remember the number one rule of the dependent media: "anything you say may and will be misquoted against you". Which is why having this on the cosmo-media archive will at least, in principle, provide some defence... i don't know what time frame the journalist has in mind - but presumably the sooner the better for any answers. IMHO probably a day or two should be OK. pozdr boud > ---------- Forwarded message ---------- > Date: Wed, 15 Feb 2006 23:38:49 +0100 > From: t.rozek at fz-juelich.de > To: boud at astro.uni.torun.pl > Subject: the shape of the universe > > Dear Sir, > > I'm a physicist and scientific writer. Within the new project of Axel Springer publishing house (editor of Newsweek in Poland and Die Welt in Germany) in Poland I would like to invite you to the discussion about the shape of the universe. > > As I know scientific group you are the leader, in 2004 went public with the information that in the microwave background radiation picture there are some indications, that our universe has a shape of dodecahedron. > > Questions I'm asking you are the same like these I have sent to other expert in this field. I will not hide, that his opinion about the shape of the universe is different than your. > > I will be pleased to get from you compact answers to questions which are listed below. Please keep in mind that new Axel Springer daily will be addressed to nonspecialists in physics or astronomy. > > Let me thank you in advance for time you will spend to answer my questions. I'm looking forward to your respond. > > With the best regards > Tomasz Rozek ---------------------------------------------------------------------- > Questions: > 1. Analysis of the microwave background radiation are the only way > - I guess - to collect information about the shape of the > universe. Isn't it risky to draw conclusions resulting from only one > experiment ? Yes, it is risky to draw conclusions from only one experiment. We expect other scientists to read our paper carefully and make their own analyses of microwave background and other data. The most independent test of our work will be testing the prediction that the average, total density parameter of the Universe, including ordinary matter, dark matter and dark energy together, should be about 0.9% to 1.1% higher than the density which would make the Universe perfectly flat ("flat" means that Pythagoras' Theorem is true). This type of test is highly independent of our analysis method. > 2. Why this is commonly believed, that data from WMAP probe, brought > down the concept of flat and infinite universe ? The flat and infinite universe model is still consistent with the WMAP data. It is not the best model, but it is still consistent with the data and most observational cosmologists still take it as the best approximation we have. Please remember, however, that no theoretical cosmologists take the flat and infinite model as a serious model of the entire Universe - it is only treated as a limiting case inside the observable sphere. > 3. There are many ideas concerning the shape of the universe. Maybe > it is like a sphere, cylinder, funnel, but it can also be like bell, > horn or dodecahedron. Why do you claim that space is > dodecahedron-like ? We don't. The first misunderstanding is that "shape" means the shape of *space itself*, not the shape of *space inside of space*. Our intuition is developed to think of objects inside of three-dimensional, Euclidean, infinite space. In order to understand what is meant by the shape of the Universe, you first need to develop a method of thinking about the shape of space itself. A good place to start would be http://pl.wikipedia.org/wiki/Ksztalt_Wszechswiata . One example of a shape of space itself is a space with the name "Poincare dodecahedral space" (PDS). One "ordinary" shape, inside of space, which helps to think about the PDS, is the dodecahedron. The second misunderstanding is that so far our group only claims to have a "hint" of that the shape of space is the PDS. Our analysis follows that by Jean-Pierre Luminet's group. Ralf Aurich's group and Jesper Gundermann have also found similar (though not exactly identical) results. > 4. What are the errors or defects of the idea of horn-like space ? None as far as I am aware of. > 5. Could you in the very easy way explain the expression, that space > has a shape ? Imagine that space only has two dimensions, instead of three. Now we can use our existing intuition about three-dimensional space to imagine many different possible two-dimensional spaces inside of three-dimensional space. In this way, we use one dimension as a purely psychological dimension. It's used by our brain, but has no physical meaning for the two-dimensional space we're thinking about. Of course, real space has three dimensions (we can ignore the time dimension for discussion of "the shape of space"), so if you can now start thinking in four dimensions, then you can use the fourth dimension as a psychological dimension and think of differently shaped spaces, each having three dimensions. > 6. Do efforts to establish a shape of the universe have any > practical meaning or you are doing that just to know ? Both. It is practical to know the shape of a footpath or a tree or a mountain or an atom or a molecule, so it is practical to know the shape of the Universe. But it is also good to knowing the shape of a work of Picasso or a beautiful woman or man, even if this has no practical use. > 7. Did universe have a beginning, and ones will have the end ? The standard hot big bang model is very well established, and this model has a limiting time we can call "time equals zero". If we start today and think backwards towards "time equals zero", then our model of the Universe becomes more and more speculative as we get towards "time equals zero". So it is more realistic to say that we have a standard model which goes *towards* having a beginning rather than saying the Universe actually "had" a beginning. However, theoretical cosmologists have some ideas of universe models extending earlier than "time equals zero". ----------------------------------------------------------------------

3 9

120 cell
by Jeff Weeks 06 Feb '06

06 Feb '06

Dear Boud et al., You intuition is correct -- there are some additional in-between layers. The attached images show layers 1 through 5. Layers 6 through 9 are of course symmetrical as you work your way towards the south pole. Note that the cells in layer 5 sit "vertically" with respect to the equatorial hyperplane (i.e. they're orthogonal to the equatorial hyperplane) which is why they appear flat in the attached image (each dark blue hexagon is the 2D shadow of a 3D cell when you project from 4D space to 3D space). Anyhow, here's the accounting: layer 1 1 layer 2 12 layer 3 20 layer 4 12 layer 5 30 layer 6 12 layer 7 20 layer 8 12 layer 9 1 ----------- total 120 Note that all numbers are "dodecahedal numbers", respecting the dodecahedral symmetry of the whole construction. The 120-cell is quite beautiful, isn't it? Best wishes to all of you, Jeff

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MG11 - Topology of the Universe (fwd) (and PDS - how many tiles?)
by Boud Roukema 06 Feb '06

06 Feb '06

hi everyone, The following is self-explanatory - you can reply to Marek directly - here is his email in antispam format (this list is publicly archived so better not write people's email addresses in ways that robots can read them): Marek.Demianski at fuw edu pl > ---------- Forwarded message ---------- > Date: Mon, 6 Feb 2006 15:02:38 +0100 (CET) > From: Marek Demianski > Subject: MG11 - Topology of the Universe > > > Dear Colleague, > > I have been asked to organize a parallel session on "Topology of the > Universe" at the XI Marcel Grossmann Meeting in Berlin, July 23 > - 29, 2006. If you are planing to attend the meeting and would like to > present a contribution at this session please let me know. Please spread this > information among your friends and collaborators. > > More information about the Meeting (and on line registration) you can > find at www.icra.it/MG/mg11. Please register by May 31 > to save 50EURO on the conference fee. > > Sincerely yours, > Marek Demianski BTW: i have a question on PDS (Poincare Dodecahedral Space) intuition which someone might be able to answer. A tiling of S^3 by the PDS has 120 copies of the PDS. If we think of this tiling starting from "here" at the "North Pole" (sorry Marcelo, this is North bias ;) (image 1) and we "stick" a copy (image 2) of the PDS next to itself along a North-Pole-South-Pole axis (e.g. X), and then moving along the X axis, we stick another copy (image 3) next to image 2, and then another and so on, then it seems to me that image 6 covers the "South Pole" and is the "antipode" copy of image 1. In other words, the "distance" between the poles is 5 copies of the FD. This allows an easy order of magnitude check on the total number of copies, since the "radius" of one hemi-hypersphere is 2.5 "copies", so that the total volume is roughly (using flat space arithmetic): 2* (4\pi/3) (2.5)^3 \sim 2* 2^2 * (5/2)^3 = 5^3 = 125 which is a good approximation to 120. (AFAIR, Jeff Weeks showed me how to do this - this is not original.) Now for my question: We have 6 "layers": North pole - 1 FD layer 2 - 12 FD's layer 3 - n FD's layer 4 - n FD's layer 5 - 12 FD's South pole - 1 Clearly layer 3 or 4 has more than 12 copies, there are some spaces that need to be filled. But the value required for the total to be 120, i.e. n= 47, is an odd number. Intuition says that everything should be even and symmetric. Can someone give a nice intuitive explanation for why n is odd and why this 12-symmetry is broken? Maybe a nice diagram? In fact, i have a partial answer: it seems to me there are some in-between layers, which we might call 2.5 and 4.5 and i guess also 3.5. But it's difficult for me to imagine them, and it's still difficult for me to imagine how the 12-symmetry is broken. It would be nice if someone had a nice diagram or intuitive explanation of how the 12-symmetry is broken. Going to a 122 tiling would save the tiling symmetry, but intuition says that 120 is better than 122. On the other hand, 2 * (1 + 12 + 48) = 122 seems simpler in terms of tiling symmetry. In the Nature paper, 120 is quoted: http://arxiv.org/abs/astro-ph/0310253 (After all, we *have* made a few minor mistakes in the past in our subject - e.g. when we said that there were uncountably many negatively curved 3-manifolds, and eventually, at MG IX (?), Jeff explained and showed us that the number was countably infinite - the classification is complicated and unfinished, but the number is countable.) cheers boud

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Re: Podreczniki
by Boud Roukema 31 Jan '06

31 Jan '06

witam On Tue, 31 Jan 2006, Karolina Wojtkowska wrote: > > Wszystkich pracowników Centrum prosze o przeslanie listy podrecznikow do > wykladów / ćwiczeń przez siebie prowadzonych. Jeśli to znacze, że Biblioteka może kupić kilka kopii książki, że traktuję jak podstawowy dla mój wykładu, wtedy polecam kupić 5-10 kopii Liddle'a po polsku: http://www.proszynski.pl/asp/fiszka.asp?ksiazka_id=1687 Jest nie drogi, więc nie widzę problem kupić kilka. W tej chwili wydaje mi się, jest tylko jeden w CA-UMK - ,,w katalogowaniu", plus jeden w BG: http://lx.bu.uni.torun.pl/cgi-bin/BG/Z2Wumk/z2w_f.pl?kl=23062-1045663056&di… pozdr boud

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sprawozdanie 2005
by Boud Roukema 30 Jan '06

30 Jan '06

czesc sorry, probably by the time you read this, the sprawozdanie meeting will already be over :P Anyway, here it is - only the first few slides are for the 10 minute presentation, of course - the other pages are "extra in-depth material" which you've probably already seen anyway. http://cosmo.torun.pl/~boud/spraw05pp4.pdf The interesting thing is that there are more and more of us IMHO :) we're starting to get near the numbers necessary to making research be more and more motivating, i.e. a real cosmology research group... :) Of course, let's see if we get our projects into good shape and publishable.... pozdr boud

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biblioteka
by Boud Roukema 26 Jan '06

26 Jan '06

Cześć wszystkim, W tej chwili mamy prośbę dać opinii o zakup między ,,standardowymi" książki konferencowych, każdy kosztują coś jak 100-200 euro, dla bibliotece CA-UMK. Ja znakowałem ksziążki, które mi oglądają jak użyteczny dla badania ekstragalaktycznego-kosmologicznego. Ale w ogóle, moglibyśmy prosić do Katarzyny zrobić nowy zakupy książki kosmologiczny, które jeszcze brakują. Chyba ostatnio raz, że zrobiliśmy, było 3 lata temu. Strona www z listę co znalezliśmy (czy kupiliśmy) ostatnio raz jest tu (na starym wiki, tzw. ,,zwiki"): http://adjani.astro.uni.torun.pl:9673/zwicky/BibliotekaCosmo Jeśli ktoś chce to kopiować/edytować do ,,nowym" wiki (twiki), bardzo proszę: http://cosmo.torun.pl/cgi-bin/twiki/view/Cosmo/BibliotekaCosmo Mój pryorytet w tej chwili dla książki byłoby raczej dla teksty podstawowych dla studentów - np kilka Peebles 1993 ,,zbiory" ? W tej chwili mamy dwie ,,czyt" (chyba to znacze, czytać na miejscu?): http://lx.bu.uni.torun.pl/cgi-bin/BG/Z2Wumk/z2w_f.pl?kl=23062-1045663056&di… I UMK w ogóle ma *wiele* Schutz: nowa edycja 2002 - 7 kopii http://lx.bu.uni.torun.pl/cgi-bin/BG/Z2Wumk/z2w_f.pl?kl=5217-1138283783&dis… (Nawet jeden u teologii :P). stara edycja 1995 - 5 kopii http://lx.bu.uni.torun.pl/cgi-bin/BG/Z2Wumk/z2w_f.pl?kl=5217-1138283783&dis… Być może kupimy też 2-3 dla CA-UMK - jeden ,,czytać na miejsce", dwie ,,zbior" ? Nie wiem jak jest doświadczenie ,,czyt" vs ,,zbior" w CA-UMK - chyba bibliotarka i studenci lepiej znają niż mnie... pozdr boud

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Accuracy of Planck vs. WMAP re universe age (fwd)
by Andrzej Marecki 24 Jan '06

24 Jan '06

There is a discussion thread on Planck mission on sci.astro.research. The 1st posting in this thread is attached. -- a. Newsgroups: sci.astro.research Subject: Accuracy of Planck vs. WMAP re universe age Date: Mon, 23 Jan 06 11:49:03 GMT Organization: http://groups.google.com Lines: 8 Approved: sci.astro.research-request(a)slimy.greenend.org.uk (mjh) Message-ID: <mt2.0-22784-1138016943(a)hercules.herts.ac.uk> Hi - does anybody have a rough idea of the increase in accuracy which the upcoming ESA Planck CMB Probe will give us regarding the age of the universe? The combined results of WMAP, BABAR et al gave us an age of ~13.7 (+/- .2) *10^9 years. Ie: How much will Planck improve on this value and its error bars? thanks, Gene -- end of forwarded message --

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[astro-ph/0510760] Constraints on changes in fundamental constants from a cosmologically distant OH absorber/emitter
by Andrzej Marecki 04 Jan '06

04 Jan '06

Better late than never... Only now I have spotted this: http://de.arxiv.org/abs/astro-ph/0510760 See also NRAO Press Release: http://www.nrao.edu/pr/2005/constants/ -- a.

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H_0 stuff - christmas/new year meeting...
by Boud Roukema 22 Dec '05

22 Dec '05

hi everyone, Bartek L should be around for the next few days or so, also Krzyszek K - we'll try to meet up to talk about H_0/jet stuff. If anyone else is interested in meeting, try to find us by email, sms, gabber/gadu-gadu or whatever. So far we don't know when/where we'll meet up... Weso³y ¶wi±t itd itd :) pozdr boud

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Nature's News Feature: Science in the Web age
by Andrzej Marecki 15 Dec '05

15 Dec '05

----- Forwarded message from NatureAlert <NatureAlert(a)info.nature.com> ----- [...] ---------------------- NEWS FEATURES ---------------------- Science in the web age: The expanding electronic universe Sarah Tomlin http://info.nature.com/cgi-bin24/DM/y/eV4x0BfWLH0Ch0qVj0ES Science in the web age: Joint efforts At its best, academia is a marketplace of ideas. But many scientists are reluctant to embrace the latest web tools that would allow them to communicate their ideas in new ways, says Declan Butler. http://info.nature.com/cgi-bin24/DM/y/eV4x0BfWLH0Ch0qVV0E7 Science in the web age: The real death of print Despite clashes with publishers over copyright, Google's plan to make millions of books available online is turning the tide for efforts to digitize the world's literature. Andreas von Bubnoff tracks the demise of the printed page. http://info.nature.com/cgi-bin24/DM/y/eV4x0BfWLH0Ch0qVk0ET Science in the web age: Start your engines Google has launched another challenge to commercial search services - this time aimed at scientists. But is the new engine running as smoothly as its fans hope? Jim Giles investigates. http://info.nature.com/cgi-bin24/DM/y/eV4x0BfWLH0Ch0qVW0E8 [...] ----- End forwarded message ----- P.S. The access to these articles is free. a.m.

2 4

couple of comments on the pixelization schemes
by Bartosz Lew 09 Nov '05

09 Nov '05

Hi Boud, I've been wondering about the optimal pixelization scheme of the sphere a couple of weeks ago and since I've send to you my own implementation of the Healpix pixelization scheme written (generally) in C (according to astro-ph/0409533) but compatible with GNU c++ compiler here I'd like to comment on some comments that can be found in the source code. And since you don't like private, closed conversations I also cc this letter to shape-univ. 1) First of all healpix is not stupid :)))) - it's cool because pixels have the same area which is not always the case (e.g.. quad-cube pixelization used with COBE data), because it's hierarchical and isolatitude of course, however the first and the last features are also common in other pixelization schemes. 1.1) But also very important thing is that it is more less "equi-angular" - i.e. the angular distance from pixel to pixel is more less constant. But obviously the exact "equi-angular" solution does not exist. 2) Now the my CPEDS library for doing useful stuff - and especially the pixelization.c has more useful functions so probably I should update the version I've send to you. i.e. - conversions from RING to NESTED and vice versa - calculation of ring given pixel and vice versa (in both nested and ring orderings) - estimated pixel size (maybe not that useful) since it may be probably just as well estimated from 4PI/N_pix. 3) The main point I wanted to come up with the new idea for pixelization scheme was the thing I addressed in point 1.1. But also the following 3 drawbacks of this scheme, namely: 3.1) the pixel shape dramatically varies from pixel to pixel. this is what I didn't like because of e.g. CMB lensing studies where the morphology at small scales would be very important - but of course this can be overcome with sufficiently oversampling the pixelization by increasing the Nside parameter to meet the Nyquist conditions. 3.2) the number of pixels in a ring does NOT gradually rises with increasing \theta (in spherical system definition consistent with HEALPIX - i.e. theta = 0 at North pole). Instead it only rises in the top (bottom) part of the north (south) polar region. This is certainly unnatural thing. since all the latitudes in equatorial (roughly from 41 deg to 180-41 deg regions are represented by the same amount of pixels in longitude) !! This is not the case e.g.. in he GLESP (Gauss-Legendre) or Igloo pixelization schemes. 3.3) It has an axial symmetry (since it has a poles equator, rings, etc). And why the CMB sky should know anything about the symmetry ? In particular why should it have an axial symmetry ? So naturally the solution would evolve into direction of platonic forms like tetrahedron, cube, ... oops it ends at icosahedron. And since we need a pixelization with number of pixels something like few Mpixels the 20 pixels of icosahedron is not enough. My idea of tetrahedron based pixelization system was just driven from this point of view that there should be no preferred directions in the sky. The system would gain higher resolution by looking for directions equally separated from neighboring directions (initially defined by axis of tetrahedron). This concept fails, of course because such a solution does not exist. Max Tegmark also went in this direction inventing the icosahedron pixelization system which is the next step after the quad-cube system, but each triangle is divided in other way. Anyway, at this time I see no point of terrible importance to force the idea of the tetrahedron pixelization system so I drop this case. rather it would be interesting to implement other pixelizations systems into the isolat packet. pozdr, Bartek

1 0

Why continue "Topologia Wszechswiata" research?
by Boud Roukema 21 Oct '05

21 Oct '05

Witam "Why continue funding for cosmic topology research?" ----------------------------------------------------------------------- The topology of the Universe (as an observational question) is one of the most fundamental questions of observational cosmology: it concerns the shape of the whole space-time that we live in. The Universe is clearly as important as any object inside the Universe. Knowing the "shape" of atoms, molecules, cells, mountains and continents is one of the basic steps in understanding any of these. At the moment, all that we are confident about regarding the shape of the Universe is a local property: it is "nearly" flat on the horizon scale; we do not know its global properties, such as its topology. Since the Toruń cosmology group is one of the most active groups in this field, funding this research topic is clearly a top priority. ----------------------------------------------------------------------- Staszek Krawczyk asked me to write why "Topologia Wszechswiata" is an important research topic which is "worth continuing", in 5 sentences, within the next 10 minutes or so (and the 10 minutes are already up). So that's what the above statement is about. (This is related to some funding request. i've wasted enough time in KBN requests with zero positive results, so if someone else is doing the admin/political work, i guess i won't complain...) Probably any feedback from cosmo-torun subscribers will be too late, but here it is anyway. pozdr boud

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physics spam (but interesting anyway :P) Spacetime 100 Years Later (fwd)
by Boud Roukema 30 Sep '05

30 Sep '05

witam cosmo-torun, IOP to nie firma, która ewidentnie popiera otwarty dostęp do informacji, raczej ma tradycję zamkniętą. Jest dlaczego dla mnie, jest to raczej ,,spam". Jednakże, artykuły mogą być interesujący - dla osoby nie chętny do szukiwanie w arxiv.org. Np, raczej lubię artykuł Ashtekar'a: są dwa rodzaju ,,approaches" do grawitacji kwantowej - jeden w czymś jest m.in. teoria struń (jest teoria ,,perturbative", - drugi w czymś jest m.in. ,,loop quantum gravity" (związany z Ashtekarem) Ashtekar uważa, że z loop quantum gravity, nie ma osobliwość na a(t) = 0, bo zwykly czas-przestrzeń tam już nie ma. Więc, tu jest info ta. pozdr boud > ---------- Forwarded message ---------- > Date: Thu, 29 Sep 2005 15:18:21 +0100 (BST) > From: New Journal of Physics <njp at iop.org> > To: boud at astro.uni.torun.pl > Subject: Spacetime 100 Years Later > > Dear Dr Roukema > > You may be interested to know that New Journal of Physics > (http://www.njp.org) has just published the third of its three > celebratory Focus Issues to appear this year in connection with the > World Year of Physics. > All contributions to 'Spacetime 100 Years Later', edited by Richard > Price and Jorge Pullin, are permanently free to read at > http://www.njp.org/focus/spacetime. Each review article is also > listed below with a direct link. > Please don't hesitate to contact me with any comments or queries you > may have about this issue or NJP in general. > With best regards, > > Tim Smith > > Dr Tim Smith > Publisher, New Journal of Physics > E-mail: njp at iop.org > WWW: http://www.njp.org > Tel: +44 (0)117 930 1204 > Fax: +44 (0)117 920 0948 > > NJP 2004 Impact Factor = 3.095 > > > FOCUS ON SPACETIME 100 YEARS LATER > > Gravity and the quantum > A Ashtekar > http://stacks.iop.org/1367-2630/7/198 > > Black holes in astrophysics > R Narayan > http://stacks.iop.org/1367-2630/7/199 > > A most useful manifestation of relativity: gravitational lenses > E E Falco > http://stacks.iop.org/1367-2630/7/200 > > Spacetime in string theory > G T Horowitz > http://stacks.iop.org/1367-2630/7/201 > > Gravitational wave detectors > P Aufmuth and K Danzmann > http://stacks.iop.org/1367-2630/7/202 > > Hawking radiation and black hole thermodynamics > D N Page > http://stacks.iop.org/1367-2630/7/203 > > The basics of gravitational wave theory > E E Flanagan and S A Hughes > http://stacks.iop.org/1367-2630/7/204 > > Laboratory tests of gravity > J H Gundlach > http://stacks.iop.org/1367-2630/7/205 > _________________ > *Data Protection* > If you would prefer not to receive updates on our journals in future, please reply to this e-mail, entering the word 'Unsubscribe' in the body of your e-mail (please leave the subject line). > > IOP Publishing Limited is the data controller (data.protection at iop.org). > We will take all reasonable measures to prevent unauthorised or unlawful processing. >

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Structured abstracts - A&A recommendation
by Andrzej Marecki 22 Sep '05

22 Sep '05

The Editors of A&A published the following recommendation to the authors. http://publish.edpsciences.org/articles/aa/pdf/2005/37/aa441100f.pdf -- a.

2 1

healpix goes GPL :)))))))
by Boud Roukema 05 Sep '05

05 Sep '05

witam healpix goes GPL :)))))))) http://cosmocoffee.info/viewtopic.php?p=972 pozdr boud

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phd candidate(s) for cosmology starting 2005/2006 ?
by Boud Roukema 11 Jul '05

11 Jul '05

Witam, We have at least one candidate to do a PhD in cosmology at TCfA. :) Because the details include personal data, IMHO i should not send any personal stuff on public lists - but anyone who feels they have a right to participate (to some extent) in informal decision-making related to PhD candidates can contact me (or Andrzej Marecki/Kus) offlist for more details. (AFAIK the formal decision is made by a committee of Wydzia³ Fizyki AiIS). pozdr boud

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CMB person - few days visit, nov/dev/jan - Jacques Delabrouille
by Boud Roukema 18 Mar '05

18 Mar '05

Witam, Jacques Delabrouille is likely to come to TCfA for a visit of a few days sometime during the next few months. He's a CMB cosmologist from Paris (College de France). You can see the CMB stuff he does here: http://de.arxiv.org/find/astro-ph/1/delabrouille/0/1/0/all/3/0 You can email him directly at delabrouille at cdf.in2p3.fr pozdr boud

2 1

http://cosmocoffee.info Witamy :)
by Boud Roukema 25 Feb '05

25 Feb '05

Witam, W kosmologii, ju� u�ywamy astro-ph od dawno, i prawie ka�dy artyku� powa�ny w kosmo jest na astro-ph. Jednak�e, gdzie rozmawia� z kolegami o najostatnich artyku�y? Na twiki na adjani, jest *technicznie* mo�liwe zrobi� fajne rozmowy, tylko w tej chwili jeszcze nie ma spo�ecze�stwo - jest mniej-wi�cej tylko boud ;). Wi�c... teraz jest: http://cosmocoffee.info Jest forum phpBB o artyku��w astro-ph - szczeg�lowie kosmo, oczywi�cie. Te� o software jak cmbfast itd itd itd. Formalnie, jest otwarty tylko dla autor�w astro-ph ,,i studenci" - tzn raczej doktoranci, ale je�li m�odsze studenci robi� konstruktywne komentarze tam, nie wierz� �e b�d� ich cenzurowane... By� autorem A&A/ApJ/MNRAS, chyba to nie wystarczy, musisz istnie� elektronicznie ;). boud

1 0

(fwd) Crisis in Cosmology
by Andrzej Marecki 15 Feb '05

15 Feb '05

-- forwarded message -- Path: news.man.torun.pl!newsfeed.pionier.net.pl!news-fra1.dfn.de!newsfeed.hanau.net!newsfeed01.sul.t-online.de!t-online.de!newsfeed.stueberl.de!ecngs!feeder.ecngs.de!195.40.0.165.MISMATCH!easynet-monga!easynet.net!feed4.jnfs.ja.net!feed2.jnfs.ja.net!jnfs.ja.net!gemini.csx.cam.ac.uk!news.cam.ac.uk!not-for-mail From: bda(a)fisica.uminho.pt Newsgroups: sci.astro.research Subject: Crisis in Cosmology Date: Mon, 14 Feb 05 17:55:41 GMT Organization: http://groups.google.com Lines: 6 Approved: sci.astro.research-request(a)slimy.greenend.org.uk (mjh) Message-ID: <mt2.0-21535-1108403741(a)hercules.herts.ac.uk> NNTP-Posting-Host: rapun.sel.cam.ac.uk X-Posting-Tool: modtool v2.0 Originator: mjh(a)hercules.herts.ac.uk ([147.197.230.144]) Xref: news.man.torun.pl sci.astro.research:5284 This is an announcement for the 1st Crisis in Cosmology Conference (CCC-I) which will be held in Portugal in the period 23-25 June 2005. All information can be obtained from http://www.cosmology.info Best regards, Jose B. Almeida -- end of forwarded message -- -- ----------------------------------------------------------------------------- Andrzej Marecki | Torun Centre for Astronomy | e-mail: amr(a)astro.uni.torun.pl N. Copernicus University | WWW: http://www.astro.uni.torun.pl ul. Gagarina 11 | tel: +48 56 6113032 PL-87-100 Torun, POLAND | fax: +48 56 6113009 ----------------------------------------------------------------------------- "If Bill Gates actually had to admin his own stuff, he'd shoot himself." -----------------------------------------------------------------------------

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by Kathryn Small 04 Feb '05

04 Feb '05

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RE: [Cosmo-torun] Re: MNRAS - ME1299
by Elizabeth Hoffman 25 Jan '05

25 Jan '05

Dear Dr Roukema Thank you for your email regarding ME1299. However we cannot give the paper further consideration. Regards Dr Hoffman Monthly Notices > -----Original Message----- > From: Boud Roukema [mailto:boud@astro.uni.torun.pl] > Sent: Tuesday, January 25, 2005 11:28 AM > To: Elizabeth Hoffman > Cc: cosmo-torun(a)cosmo.torun.pl > Subject: Re: [Cosmo-torun] Re: MNRAS - ME1299 > > Dear Dr Hoffman, > Has MNRAS come to any decision following our request? > > http://cosmo.torun.pl/pipermail/cosmo-torun/2004-December/000314.html > > Best regards, > Boud > > On Thu, 16 Dec 2004, Boud Roukema wrote: > > > Dear Dr Hoffman, > > > > On Tue, 14 Dec 2004, Elizabeth Hoffman wrote: > > > > > Dear Dr Roukema > > > > > > Regarding your paper ref. ME1299. We have recently > discovered that > > > a paper on the same subject, by K. Gorski et al., has > been submitted > > > to and accepted by the Astrophysical Journal. A preprint of this > > > paper was posted on astro-ph/0409513 on September 21, some time > > > before your paper was received by Monthly Notices on November 12, > > > but you did not cite this paper in your own. This prior > submission > > > must take precedence over > > > > The reason we did not cite that paper is that Gorski et > al's new paper > > (astro-ph/0409513) was consequent, not precedent, to our paper, and > > covered essentially the same material. We sent our paper to those > > authors on 8 September 2004 proposing co-authorship. > > > > 8 September 2004 is precedent to 21 September 2004. > > > > > yours, and I regret that we must therefore reject your paper for > > > publication in Monthly Notices. If you consider that your paper > > > contains significant new material beyond that presented > in the paper > > > by Gorski et al., then we may be able to consider a significantly > > > revised version, but such a paper would be treated as a > new submission. > > > > On 8 September, we invited Gorski et al. to be coauthors of > our paper. > > You can verify this either on the public archives of our > mailing list: > > > http://cosmo.torun.pl/pipermail/cosmo-torun/2004-September/000254.html > > or by asking any of the subscribers to the mailing list: > > > > [Note: replace " at " by "@" - this is anti-spam-robot protection > > throughout this email.] > > * amr at astro.uni.torun.pl > > * bartosz.lew at astri.uni.torun.pl > > * boud at astro.uni.torun.pl > > * jarekr at ncac.torun.pl > > * magda at astro.uni.torun.pl > > * mhanasz at astri.uni.torun.pl > > * michalf at ncac.torun.pl > > * motylek at astro.uni.torun.pl > > * ssober at phys.uni.torun.pl > > * tavi at astro.uni.torun.pl > > * tkato at kusastro.kyoto-u.ac.jp > > * xlenka at poczta.fm > > or the HEALPix authors: > > * Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, > > * Eric Hivon <efh at ipac.caltech.edu>, > > * Frode Hansen <Frode.Hansen at roma2.infn.it>, > > *"Benjamin D. Wandelt" <bwandelt at uiuc.edu> to check > their email > > archive from 8 September 2004. > > > > While not many of the people listed here are necessarily "neutral", > > the nature of the date and content of the email sent on 8 September > > 2004 consitute an easily falsifiable claim (in the sense of > Karl Popper). > > > > Below you will find the email including full header > information, but > > the most relevant part of the email is as follows: > > > > > Date: Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > > > From: Boud Roukema <boud at astro.uni.torun.pl> > > > Reply-To: Boud Roukema <boud at astro.uni.torun.pl>, > > > Bartek Lew <blew at astro.uni.torun.pl>, cosmo-torun at > > > astro.uni.torun.pl > > > To: Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, > > > Eric Hivon <efh at ipac.caltech.edu>, > > > Frode Hansen <Frode.Hansen at roma2.infn.it>, > > > "Benjamin D. Wandelt" <bwandelt at uiuc.edu>, > > > Bartek Lew <blew at astro.uni.torun.pl>, > > > Boud Roukema <boud at astro.uni.torun.pl>, > > > cosmo-torun at astro.uni.torun.pl > > > Subject: proposed co-authorship > > > > > > Dear colleagues, > > > Please find attached the draft of a paper of which we > invite you > > > to be co-authors. It is felt that the most consensual way > to publish > > > this paper would be to include the members of the HEALPix > > > collaboration. We would be most happy to include your names as > > > co-authors, if that is what you wish. > > > > > > However, if we hear nothing from you by Wednesday 22 > September, then > > > we will assume that you do not wish to be co-authors. > > > > > > Regards, > > > Boud, Bartek > > > > > > Gorski et al. made the choice of not being co-authors with us, but > > their submission of an article, with a preprint on astro-ph on > > September 21, clearly shows that they submitted their > article in full > > knowledge of our work, and they submitted their version one > day before > > our deadline in order to "officially" be able to claim publication > > precedence. > > > > Frode Hansen <Frode.Hansen at roma2.infn.it> started a constructive > > discussion with us (which ended with his choosing not to be a > > co-author with us); he would probably be someone from > "Gorski's group" > > willing to confirm the chronology here. > > > > On 22 September, we submitted our own article to Astronomy & > > Astrophysics, but Astronomy & Astrophysics was unwilling to > consider > > the chronology we have mentioned and was unwilling to send > the article > > to a neutral referee for peer review, which is why we only > submitted > > to MNRAS several weeks later, hoping for a more objective > response to > > our article which was precedent to Gorski et al's article. > > > > In our humble opinion, the most constructive solution would be to > > consider this to be simultaneous submission by two groups, with one > > group (us) openly and publicly offering cooperation to the other, > > which failed to respond and instead deliberately published a day > > before our proposed deadline. Maybe you could discuss this with > > Astrophysical Journal editors to find a constructive solution. > > > > It would be appreciated if you could consider the fully chronology > > here. > > > > Best regards, > > Boud Roukema, Bartosz Lew > > > > > > Enclosed (text) (to avoid filling your mailbox, the MIME attachment > > has been removed, but we, or any of the recipients cited above who > > have kept the email in his/her mailbox, can forward the > full email to > > you including the MIME attachment if you wish): > > [Note: "@" is replaced by " at " - this is anti-spam-robot > protection > > throughout this email.] > > > > > > > > > From cosmo-torun-owner at newton.astro.uni.torun.pl Wed Sep 8 > > > 15:26:00 2004 > > > Return-Path: <cosmo-torun-owner at newton.astro.uni.torun.pl> > > > Delivered-To: boud at adjani.astro.uni.torun.pl > > > Received: from newton.astro.uni.torun.pl > (newton.astro.uni.torun.pl [158.75.6.7]) > > > by adjani.astro.uni.torun.pl (Postfix) with ESMTP id 674A82FC92 > > > for <boud at adjani.astro.uni.torun.pl>; Wed, 8 Sep > 2004 15:26:00 > > > +0200 (CEST) > > > Received: from newton.astro.uni.torun.pl (sympa at > localhost [127.0.0.1]) > > > by newton.astro.uni.torun.pl (8.12.9/8.12.9) with ESMTP > id i88DGZsX026233; > > > Wed, 8 Sep 2004 15:16:36 +0200 (MET DST) > > > Received: by newton.astro.uni.torun.pl > (8.12.9/8.12.9/Submit) id i88DGXCb026231; > > > Wed, 8 Sep 2004 15:16:33 +0200 (MET DST) > > > X-Authentication-Warning: newton.astro.uni.torun.pl: sympa set > > > sender to cosmo-torun-owner at newton.astro.uni.torun.pl using -f > > > Received: from adjani.astro.uni.torun.pl > (adjani.astro.uni.torun.pl [158.75.6.40]) > > > by newton.astro.uni.torun.pl (8.12.9/8.12.9) with ESMTP > id i88DFOsX026212; > > > Wed, 8 Sep 2004 15:15:24 +0200 (MET DST) > > > Received: by adjani.astro.uni.torun.pl (Postfix, from userid 1000) > > > id BB9DD2FC93; Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > > > Received: from localhost (localhost [127.0.0.1]) > > > by adjani.astro.uni.torun.pl (Postfix) with ESMTP > > > id A1A6A2FC92; Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > > > Date: Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > > > From: Boud Roukema <boud at astro.uni.torun.pl> > > > Reply-To: Boud Roukema <boud at astro.uni.torun.pl>, > > > Bartek Lew <blew at astro.uni.torun.pl>, cosmo-torun at > > > astro.uni.torun.pl > > > To: Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, > > > Eric Hivon <efh at ipac.caltech.edu>, > > > Frode Hansen <Frode.Hansen at roma2.infn.it>, > > > "Benjamin D. Wandelt" <bwandelt at uiuc.edu>, > > > Bartek Lew <blew at astro.uni.torun.pl>, > > > Boud Roukema <boud at astro.uni.torun.pl>, > > > cosmo-torun at astro.uni.torun.pl > > > Subject: proposed co-authorship > > > Message-ID: <Pine.LNX.4.53.0409081520170.855 at > > > adjani.astro.uni.torun.pl> > > > MIME-Version: 1.0 > > > Content-Type: MULTIPART/MIXED; > BOUNDARY="1268656134-1928451780-1094649867=:855" > > > X-Loop: cosmo-torun at newton.astro.uni.torun.pl > > > X-Sequence: 274 > > > Precedence: list > > > X-no-archive: yes > > > List-Id: <cosmo-torun at newton.astro.uni.torun.pl> > > > List-Help: <mailto:sympa at > newton.astro.uni.torun.pl?subject=help> > > > List-Subscribe: <mailto:sympa at > > > newton.astro.uni.torun.pl?subject=subscribe%20cosmo-torun> > > > List-Unsubscribe: <mailto:sympa at > > > newton.astro.uni.torun.pl?subject=unsubscribe%20cosmo-torun> > > > List-Post: <mailto:cosmo-torun at newton.astro.uni.torun.pl> > > > List-Owner: <mailto:cosmo-torun-request at > > > newton.astro.uni.torun.pl> > > > List-Archive: > <http://www.astro.uni.torun.pl/sympa/arc/cosmo-torun> > > > X-Spam-Status: No, hits=3.7 required=5.0 > > > tests=MIME_NULL_BLOCK,CBYI,RCVD_IN_ORBS version=2.20 > > > X-Spam-Level: *** > > > Status: RO > > > X-Status: > > > X-Keywords: > > > X-UID: 68 > > > > > > This message is in MIME format. The first part should > be readable text, > > > while the remaining parts are likely unreadable without > MIME-aware tools. > > > Send mail to mime at docserver.cac.washington.edu for more info. > > > > > > --1268656134-1928451780-1094649867=:855 > > > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > > > > Dear colleagues, > > > Please find attached the draft of a paper of which we > invite you > > > to be co-authors. It is felt that the most consensual way > to publish > > > this paper would be to include the members of the HEALPix > > > collaboration. We would be most happy to include your names as > > > co-authors, if that is what you wish. > > > > > > However, if we hear nothing from you by Wednesday 22 > September, then > > > we will assume that you do not wish to be co-authors. > > > > > > Regards, > > > Boud, Bartek > > > > > > _______________________________________________ > > Cosmo-torun mailing list > > Cosmo-torun(a)cosmo.torun.pl > > http://cosmo.torun.pl/mailman/listinfo/cosmo-torun > > >

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Re: MNRAS - ME1299
by Boud Roukema 25 Jan '05

25 Jan '05

Dear Dr Hoffman, On Tue, 14 Dec 2004, Elizabeth Hoffman wrote: > Dear Dr Roukema > > Regarding your paper ref. ME1299. We have recently discovered that a > paper on the same subject, by K. Gorski et al., has been submitted to > and accepted by the Astrophysical Journal. A preprint of this paper was > posted on astro-ph/0409513 on September 21, some time before your paper > was received by Monthly Notices on November 12, but you did not cite > this paper in your own. This prior submission must take precedence over The reason we did not cite that paper is that Gorski et al's new paper (astro-ph/0409513) was consequent, not precedent, to our paper, and covered essentially the same material. We sent our paper to those authors on 8 September 2004 proposing co-authorship. 8 September 2004 is precedent to 21 September 2004. > yours, and I regret that we must therefore reject your paper for > publication in Monthly Notices. If you consider that your paper contains > significant new material beyond that presented in the paper by Gorski et > al., then we may be able to consider a significantly revised version, > but such a paper would be treated as a new submission. On 8 September, we invited Gorski et al. to be coauthors of our paper. You can verify this either on the public archives of our mailing list: http://cosmo.torun.pl/pipermail/cosmo-torun/2004-September/000254.html or by asking any of the subscribers to the mailing list: [Note: replace " at " by "@" - this is anti-spam-robot protection throughout this email.] * amr at astro.uni.torun.pl * bartosz.lew at astri.uni.torun.pl * boud at astro.uni.torun.pl * jarekr at ncac.torun.pl * magda at astro.uni.torun.pl * mhanasz at astri.uni.torun.pl * michalf at ncac.torun.pl * motylek at astro.uni.torun.pl * ssober at phys.uni.torun.pl * tavi at astro.uni.torun.pl * tkato at kusastro.kyoto-u.ac.jp * xlenka at poczta.fm or the HEALPix authors: * Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, * Eric Hivon <efh at ipac.caltech.edu>, * Frode Hansen <Frode.Hansen at roma2.infn.it>, *"Benjamin D. Wandelt" <bwandelt at uiuc.edu> to check their email archive from 8 September 2004. While not many of the people listed here are necessarily "neutral", the nature of the date and content of the email sent on 8 September 2004 consitute an easily falsifiable claim (in the sense of Karl Popper). Below you will find the email including full header information, but the most relevant part of the email is as follows: > Date: Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > From: Boud Roukema <boud at astro.uni.torun.pl> > Reply-To: Boud Roukema <boud at astro.uni.torun.pl>, > Bartek Lew <blew at astro.uni.torun.pl>, cosmo-torun at astro.uni.torun.pl > To: Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, > Eric Hivon <efh at ipac.caltech.edu>, > Frode Hansen <Frode.Hansen at roma2.infn.it>, > "Benjamin D. Wandelt" <bwandelt at uiuc.edu>, > Bartek Lew <blew at astro.uni.torun.pl>, > Boud Roukema <boud at astro.uni.torun.pl>, > cosmo-torun at astro.uni.torun.pl > Subject: proposed co-authorship > > Dear colleagues, > Please find attached the draft of a paper of which we invite you to > be co-authors. It is felt that the most consensual way to publish this > paper would be to include the members of the HEALPix collaboration. We > would be most happy to include your names as co-authors, if that is > what you wish. > > However, if we hear nothing from you by Wednesday 22 September, > then we will assume that you do not wish to be co-authors. > > Regards, > Boud, Bartek Gorski et al. made the choice of not being co-authors with us, but their submission of an article, with a preprint on astro-ph on September 21, clearly shows that they submitted their article in full knowledge of our work, and they submitted their version one day before our deadline in order to "officially" be able to claim publication precedence. Frode Hansen <Frode.Hansen at roma2.infn.it> started a constructive discussion with us (which ended with his choosing not to be a co-author with us); he would probably be someone from "Gorski's group" willing to confirm the chronology here. On 22 September, we submitted our own article to Astronomy & Astrophysics, but Astronomy & Astrophysics was unwilling to consider the chronology we have mentioned and was unwilling to send the article to a neutral referee for peer review, which is why we only submitted to MNRAS several weeks later, hoping for a more objective response to our article which was precedent to Gorski et al's article. In our humble opinion, the most constructive solution would be to consider this to be simultaneous submission by two groups, with one group (us) openly and publicly offering cooperation to the other, which failed to respond and instead deliberately published a day before our proposed deadline. Maybe you could discuss this with Astrophysical Journal editors to find a constructive solution. It would be appreciated if you could consider the fully chronology here. Best regards, Boud Roukema, Bartosz Lew Enclosed (text) (to avoid filling your mailbox, the MIME attachment has been removed, but we, or any of the recipients cited above who have kept the email in his/her mailbox, can forward the full email to you including the MIME attachment if you wish): [Note: "@" is replaced by " at " - this is anti-spam-robot protection throughout this email.] > From cosmo-torun-owner at newton.astro.uni.torun.pl Wed Sep 8 15:26:00 2004 > Return-Path: <cosmo-torun-owner at newton.astro.uni.torun.pl> > Delivered-To: boud at adjani.astro.uni.torun.pl > Received: from newton.astro.uni.torun.pl (newton.astro.uni.torun.pl [158.75.6.7]) > by adjani.astro.uni.torun.pl (Postfix) with ESMTP id 674A82FC92 > for <boud at adjani.astro.uni.torun.pl>; Wed, 8 Sep 2004 15:26:00 +0200 (CEST) > Received: from newton.astro.uni.torun.pl (sympa at localhost [127.0.0.1]) > by newton.astro.uni.torun.pl (8.12.9/8.12.9) with ESMTP id i88DGZsX026233; > Wed, 8 Sep 2004 15:16:36 +0200 (MET DST) > Received: by newton.astro.uni.torun.pl (8.12.9/8.12.9/Submit) id i88DGXCb026231; > Wed, 8 Sep 2004 15:16:33 +0200 (MET DST) > X-Authentication-Warning: newton.astro.uni.torun.pl: sympa set sender to cosmo-torun-owner at newton.astro.uni.torun.pl using -f > Received: from adjani.astro.uni.torun.pl (adjani.astro.uni.torun.pl [158.75.6.40]) > by newton.astro.uni.torun.pl (8.12.9/8.12.9) with ESMTP id i88DFOsX026212; > Wed, 8 Sep 2004 15:15:24 +0200 (MET DST) > Received: by adjani.astro.uni.torun.pl (Postfix, from userid 1000) > id BB9DD2FC93; Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > Received: from localhost (localhost [127.0.0.1]) > by adjani.astro.uni.torun.pl (Postfix) with ESMTP > id A1A6A2FC92; Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > Date: Wed, 8 Sep 2004 15:24:27 +0200 (CEST) > From: Boud Roukema <boud at astro.uni.torun.pl> > Reply-To: Boud Roukema <boud at astro.uni.torun.pl>, > Bartek Lew <blew at astro.uni.torun.pl>, cosmo-torun at astro.uni.torun.pl > To: Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, > Eric Hivon <efh at ipac.caltech.edu>, > Frode Hansen <Frode.Hansen at roma2.infn.it>, > "Benjamin D. Wandelt" <bwandelt at uiuc.edu>, > Bartek Lew <blew at astro.uni.torun.pl>, > Boud Roukema <boud at astro.uni.torun.pl>, > cosmo-torun at astro.uni.torun.pl > Subject: proposed co-authorship > Message-ID: <Pine.LNX.4.53.0409081520170.855 at adjani.astro.uni.torun.pl> > MIME-Version: 1.0 > Content-Type: MULTIPART/MIXED; BOUNDARY="1268656134-1928451780-1094649867=:855" > X-Loop: cosmo-torun at newton.astro.uni.torun.pl > X-Sequence: 274 > Precedence: list > X-no-archive: yes > List-Id: <cosmo-torun at newton.astro.uni.torun.pl> > List-Help: <mailto:sympa at newton.astro.uni.torun.pl?subject=help> > List-Subscribe: <mailto:sympa at newton.astro.uni.torun.pl?subject=subscribe%20cosmo-torun> > List-Unsubscribe: <mailto:sympa at newton.astro.uni.torun.pl?subject=unsubscribe%20cosmo-torun> > List-Post: <mailto:cosmo-torun at newton.astro.uni.torun.pl> > List-Owner: <mailto:cosmo-torun-request at newton.astro.uni.torun.pl> > List-Archive: <http://www.astro.uni.torun.pl/sympa/arc/cosmo-torun> > X-Spam-Status: No, hits=3.7 required=5.0 tests=MIME_NULL_BLOCK,CBYI,RCVD_IN_ORBS version=2.20 > X-Spam-Level: *** > Status: RO > X-Status: > X-Keywords: > X-UID: 68 > > This message is in MIME format. The first part should be readable text, > while the remaining parts are likely unreadable without MIME-aware tools. > Send mail to mime at docserver.cac.washington.edu for more info. > > --1268656134-1928451780-1094649867=:855 > Content-Type: TEXT/PLAIN; charset=US-ASCII > > Dear colleagues, > Please find attached the draft of a paper of which we invite you to > be co-authors. It is felt that the most consensual way to publish this > paper would be to include the members of the HEALPix collaboration. We > would be most happy to include your names as co-authors, if that is > what you wish. > > However, if we hear nothing from you by Wednesday 22 September, > then we will assume that you do not wish to be co-authors. > > Regards, > Boud, Bartek

1 1

grant KBN deadline UMK wtorek 25.01 ?
by Boud Roukema 24 Jan '05

24 Jan '05

Witam, Circus time again! It seems to me that the KBN deadline is Tuesday 25.01 for sending to the rectorat. Do we try for a common grant proposal? Or separate ones once again? We have a cosmic topology result + other cosmic topology papers which make the case for cosmic topology fairly strong, IMHO, and this includes the topology-AGN connection. Time is getting short, so i'll assume by default we make separate proposals as we tried last year (unsuccessfully). Hmmm, in the last round, there were three cosmo applications that succeeeded: http://www.astrouw.edu.pl/~kst/konkursy.html Demianski 200.000 zl Juszkiewicz 411.000 zl Lokas 102.000 zl If we fail again, then IMHO it will be time to activate cosmo-pl@..., this is a community problem and will require a community solution if it remains unsolved... pozdr boud

2 2

WMAP gossip
by Boud Roukema 07 Dec '04

07 Dec '04

witam, There's some very interesting WMAP gossip - e.g. why the 2nd year data have not been released yet, here: http://www.geometrygames.org/ESoS/CosmologyNews.html i say "gossip" (,,plotki" ?) because there are no links to astro-ph articles, conference proceedings, etc. (but a relevant article is: http://de.arxiv.org/abs/astro-ph/0403353) pozdr boud

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jasna definicja: universe domain vs multiverse GFR Ellis et al
by Boud Roukema 07 Dec '04

07 Dec '04

Witam, W odpowiedź do pytania o termina ,,cały wszechświat", przypominam jeden z bardzo rzadko artykuły (moim skromnym zdaniem), który jasnie mówi o różnica między dwomi pojęciami: (1) ,,wiele domen 'wszechświatowy' wewnątrz jednym przestrzeń ciągly" vs (2) ,,zbiór [ensemble] wiele wszechświatów, jak niezależnych przestrzeni" Chyba angielski będzie trudny dla wielych, ale lepiej czytać artykuł (en) który jest jasny (chociaż głęboki) zamiast artykuł z wielymi słowami dwuznacznymi. Jest Multiverses and physical cosmology Authors: G.F.R. Ellis, U. Kirchner, W.R. Stoeger http://de.arxiv.org/abs/astro-ph/0305292 i już jest (od dawno) na strony CosmoNews: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/CosmoNews pozdr boud

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cosmdist-0.2.0.tar.gz
by Boud Roukema 04 Dec '04

04 Dec '04

Witam, http://cosmo.torun.pl/GPLdownload/dodec/cosmdist-0.2.0.tar.gz Pakiet dla: comoving distance (radial) comoving distance (arc length 1 radian) = proper motion distance time as functions of z + their inverses + horizon, radius of curvature -> either command line (if you have glibc) otherwise both C library and (C wrapper which functions as) a fortran library are here Enjoy! :) (and modify, redistribute etc according to the GPL) pozdr boud

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--- SPAM --- 2005 doctors directory plastic surgery, oncology, 40,000 hospitals, 25,000 nursing homes and 400,000 doctors.
by Clarence Montano 25 Nov '04

25 Nov '04

The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. Each record is indexed by such features as name, address, phone and fax. The database is available in Excel format on CD Rom. It is designed for mailing lists and merges. The data can be selected by state or other criteria such as type of practice. It can be used on an unlimited basis. For the past 14 years, MedCom has maintained the most comprehensive healthcare lists. Our directories are 100% telephone verified and updated every quarter. MedCom continues to hold the nation's most extensive and reliable databases of key decision-makers in the health care market. Available exclusively on CD-Rom (Excel), the data can be used on an unlimited basis. It is easily exportable to other programs for mailing or faxing purposes. For a limited time, this extensive database is offered at an introductory Price of $195 (reg. $745). To order, please print this e-mail, complete the information below and fax it to 416-765-0029 (tel: 416-765-0028). NAME: TITLE: ORGANIZATION: ADDRESS: CITY: STATE: POSTAL: TEL: FAX: EMAIL: Spam detection software, running on the system "galileo.astro.uni.torun.pl", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or block similar future email. If you have any questions, see postmaster for details. Content preview: The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. [...] Content analysis details: (5.4 points, 4.5 required) pts rule name description ---- ---------------------- -------------------------------------------------- 5.4 BAYES_99 BODY: Bayesian spam probability is 99 to 100% [score: 1.0000]

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--- SPAM --- 2005 doctors directory plastic surgery, oncology, Direct mail, disease, surgery, obstetrics, physicians.
by Jerrold Alfaro 25 Nov '04

25 Nov '04

The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. Each record is indexed by such features as name, address, phone and fax. The database is available in Excel format on CD Rom. It is designed for mailing lists and merges. The data can be selected by state or other criteria such as type of practice. It can be used on an unlimited basis. For the past 14 years, MedCom has maintained the most comprehensive healthcare lists. Our directories are 100% telephone verified and updated every quarter. MedCom continues to hold the nation's most extensive and reliable databases of key decision-makers in the health care market. Available exclusively on CD-Rom (Excel), the data can be used on an unlimited basis. It is easily exportable to other programs for mailing or faxing purposes. For a limited time, this extensive database is offered at an introductory Price of $195 (reg. $745). To order, please print this e-mail, complete the information below and fax it to 416-765-0029 (tel: 416-765-0028). NAME: TITLE: ORGANIZATION: ADDRESS: CITY: STATE: POSTAL: TEL: FAX: EMAIL: Spam detection software, running on the system "galileo.astro.uni.torun.pl", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or block similar future email. If you have any questions, see postmaster for details. Content preview: The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. [...] Content analysis details: (5.4 points, 4.5 required) pts rule name description ---- ---------------------- -------------------------------------------------- 5.4 BAYES_99 BODY: Bayesian spam probability is 99 to 100% [score: 1.0000]

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--- SPAM --- cd version doctor's american directory, 7,000 hospitals, 25,000 nursing homes and 400,000 doctors.
by Belinda Haskins 22 Nov '04

22 Nov '04

The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. Each record is indexed by such features as name, address, phone and fax. The database is available in Excel format on CD Rom. It is designed for mailing lists and merges. The data can be selected by state or other criteria such as type of practice. It can be used on an unlimited basis. For the past 14 years, MedCom has maintained the most comprehensive healthcare lists. Our directories are 100% telephone verified and updated every quarter. MedCom continues to hold the nation's most extensive and reliable databases of key decision-makers in the health care market. Available exclusively on CD-Rom (Excel), the data can be used on an unlimited basis. It is easily exportable to other programs for mailing or faxing purposes. For a limited time, this extensive database is offered at an introductory Price of $195 (reg. $745). To order, please print this e-mail, complete the information below and fax it to 416-765-0029 (tel: 416-765-0028). NAME: TITLE: ORGANIZATION: ADDRESS: CITY: STATE: POSTAL: TEL: FAX: EMAIL: Spam detection software, running on the system "galileo.astro.uni.torun.pl", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or block similar future email. If you have any questions, see postmaster for details. Content preview: The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. [...] Content analysis details: (6.1 points, 4.5 required) pts rule name description ---- ---------------------- -------------------------------------------------- 5.4 BAYES_99 BODY: Bayesian spam probability is 99 to 100% [score: 1.0000] 0.7 PRIORITY_NO_NAME Message has priority setting, but no X-Mailer

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--- SPAM --- genralpractice, 40,000 hospitals, 25,000 nursing homes and 400,000 doctors
by Neil Christensen 21 Nov '04

21 Nov '04

The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. Each record is indexed by such features as name, address, phone and fax. The database is available in Excel format on CD Rom. It is designed for mailing lists and merges. The data can be selected by state or other criteria such as type of practice. It can be used on an unlimited basis. For the past 14 years, MedCom has maintained the most comprehensive healthcare lists. Our directories are 100% telephone verified and updated every quarter. MedCom continues to hold the nation's most extensive and reliable databases of key decision-makers in the health care market. Available exclusively on CD-Rom (Excel), the data can be used on an unlimited basis. It is easily exportable to other programs for mailing or faxing purposes. For a limited time, this extensive database is offered at an introductory Price of $195 (reg. $745). To order, please print this e-mail, complete the information below and fax it to 416-765-0029 (tel: 416-765-0028). NAME: TITLE: ORGANIZATION: ADDRESS: CITY: STATE: POSTAL: TEL: FAX: EMAIL: Spam detection software, running on the system "galileo.astro.uni.torun.pl", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or block similar future email. If you have any questions, see postmaster for details. Content preview: The New 2005 United States Healthcare Database. This complete database includes all hospitals, nursing homes, and physicians in the country. In a rapidly-changing industry, current healthcare information is an invaluable resource to businesses and organizations. The United States Healthcare Database includes comprehensive information on more than 7,000 hospitals, 25,000 nursing homes and 400,000 doctors. It is the most extensive and reliable mailing list and database of key decision makers in the health care market. [...] Content analysis details: (9.5 points, 4.5 required) pts rule name description ---- ---------------------- -------------------------------------------------- 5.4 BAYES_99 BODY: Bayesian spam probability is 99 to 100% [score: 1.0000] 4.1 FORGED_RCVD_NET_HELO Host HELO'd using the wrong IP network

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copying algorithms: GNU Scientific Library vs Numerical Recipes
by Boud Roukema 19 Nov '04

19 Nov '04

Witam, What can be legally (and morally) copied from a program under a restrictive copyright is "the algorithms, the ideas" but not the particular way of expressing them. So the practical question is: where is the borderline? In the GSL (GNU Scientific Library), http://www.gnu.org/software/gsl/, GNU provides, e.g. in Version 1.1.1, the version below of NR's ran0 routine. i'm sure most of us have access to a legal copy of the NR routine, or else a little googling shows e.g. http://cc.oulu.fi/~tf/tiedostot/pub/nrf/ran0.f Well, to me these look extremely similar to one another. Even the constants: static const long int m = 2147483647, a = 16807, q = 127773, r = 2836; static const unsigned long int mask = 123459876; are exactly identical to those in the NR routines, they even have the same names, except for the "i". Is this really a different "expression"? In any case, IMHO noone can deny that the authors of the GSL routines (there is also ran1, ran2, ran3) have very likely had access to the NR source code. Sure, they translated it to C and added some stuff, but it's the same algorithm, it's essentially the same sequence of steps. Anyway, GSL has lots of really cool stuff. :) Let's defend scientific software freedom! pozdr boud ---------------------------------------------------------------------- /* rng/ran0.c * * Copyright (C) 1996, 1997, 1998, 1999, 2000 James Theiler, Brian Gough * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <config.h> #include <stdlib.h> #include <gsl/gsl_errno.h> #include <gsl/gsl_rng.h> /* This is an implementation of the algorithm used in Numerical Recipe's ran0 generator. It is the same as MINSTD with an XOR mask of 123459876 on the seed. The period of this generator is 2^31. Note, if you choose a seed of 123459876 it would give a degenerate series 0,0,0,0, ... I've made that into an error. */ static inline unsigned long int ran0_get (void *vstate); static double ran0_get_double (void *vstate); static void ran0_set (void *state, unsigned long int s); static const long int m = 2147483647, a = 16807, q = 127773, r = 2836; static const unsigned long int mask = 123459876; typedef struct { unsigned long int x; } ran0_state_t; static inline unsigned long int ran0_get (void *vstate) { ran0_state_t *state = (ran0_state_t *) vstate; const unsigned long int x = state->x; const long int h = x / q; const long int t = a * (x - h * q) - h * r; if (t < 0) { state->x = t + m; } else { state->x = t; } return state->x; } static double ran0_get_double (void *vstate) { return ran0_get (vstate) / 2147483647.0 ; } static void ran0_set (void *vstate, unsigned long int s) { ran0_state_t *state = (ran0_state_t *) vstate; if (s == mask) { GSL_ERROR_VOID ("ran0 should not use seed == mask", GSL_EINVAL); } state->x = s ^ mask; return; } static const gsl_rng_type ran0_type = {"ran0", /* name */ 2147483646, /* RAND_MAX */ 1, /* RAND_MIN */ sizeof (ran0_state_t), &ran0_set, &ran0_get, &ran0_get_double}; const gsl_rng_type *gsl_rng_ran0 = &ran0_type; ----------------------------------------------------------------------

2 4

puzzled about healpix software and Numerical Recipes
by Boud Roukema 17 Nov '04

17 Nov '04

Witam, i am aware that at least one person felt that an earlier version of a package i released contained "expressions (particularly any arbitrary or stylistic choices)" identical to those in Numerical Recipes routines. My own judgment had been that the expression was different, only the "ideas, methodology and algorithm" were identical to the Numerical Recipes routines. In NR's own words, this is perfectly acceptable within the definition of copyright. And, of course, there were clear warnings that the code was inspired from NR. Nevertheless, i followed the concern, and stopped distribution. In order to avoid any ambiguity, i (and any other volunteers) will rework the code using routines from the GSL (GNU Scientific Library): http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/ComputerLanguages… which Michał Frąckowiak brought to our attention :)) and will reexpress any remaining algorithms, possibly changing the algorithms themselves, even though this is not necessary. However, you might want to note that there seems to be something curious about a certain non-free package called Healpix_1.20. i suggest to people with a copy of this package to have a look at two files, which, apparently, exist in this package: Healpix_1.20/src/f90/mod/num_rec.f90 and also at the copyright notice Healpix_1.20/READ_Copyrights_Licenses.txt and then to look at the Numerical Recipes guidelines for redistributing their routines, whether binary or as source code: http://www.numerical-recipes.com/com/info-permissions.html Apparently, the file Healpix_1.20/src/f90/mod/num_rec.f90 contains the source code for the routines: dsvbksb dpythag dsvdcmp isort A quick search on google on, e.g., "dsvbksb" shows that NR probably cannot control distribution of these files: http://www.google.pl/search?hl=pl&q=dsvbksb&btnG=Szukaj+z+Google&lr= Nevertheless, there *are*, apparently, NR routines provided as source code in the file Healpix_1.20/src/f90/mod/num_rec.f90 which is *claimed* to be NR code, including one-line copyright notices from NR. In principle, redistributing NR routines without permission from NR is a violation of copyright - stating the copyright notice is not enough to satisfy NR. Of course, it could, in principle, be the case that the Healpix collaboration have paid "a fixed fee" for this and have permission to redistribute. However, first note the cases in which NR provides permission: http://www.numerical-recipes.com/com/info-permissions.html > if you want to make available to your users a subset of Recipes in > object, or individually callable, form, but not including source > code. We consider such requests on a case-by-case basis, with > permission more likely when they are for fewer than 20 Recipes used in > this manner. > > * In most cases of specialized software, we charge only a nominal > flat fee per Recipe for each use (unlimited number of copies). > > * The copyright notice is required, as above, and we also request that > the printed manual contain words to the effect "the procedures [your > procedure identifiers] are based on routines in Numerical Recipes: The > Art of Scientific Computing, published by Cambridge University Press, > and are used by permission." Note: "not including source code". Also: the full copyright notice (not just one line, see "EXACT WORDING OF REQUIRED COPYRIGHT NOTICES" on http://www.numerical-recipes.com/com/info-permissions.html ) is required. However, for distributing *source code*: > Finally, there is the case where our source code, or source code > based in copyright on our code, is to be made available to users. We > consider these requests on a case-by-case basis, but the success > rate of these requests is not high. ... > # If permission is given, you will need to include a notice similar > to the sample below as a comment in each routine that is based on a > Numerical Recipes routine. So Healpix_1.20 could, in principle, redistribute NR source code (probably for a fixed fee). However, this is only considered "on a case-by-case basis" and "the success rate of these requests is not high". Moreover, there would need to be the full copyright notice, and, apparently, the file Healpix_1.20/READ_Copyrights_Licenses.txt does not contain any reference to Numerical Recipes. Also, the full copyright notice needs to be included "as a comment in each routine". (GNU recommends including a big copyright announcement at the top of each routine, not just one line.) There could be one way around this: since Healpix is non-free, and requires personal email between applicants and authors, the authors could restrict distribution to people who declare that they already have access to a legal copy of NR. i'm not sure if NR would be happy, but it might work. However, this is not our problem. But it does demonstrate why an open model of code development has advantages: people worried about copyright issues are more likely to speak up earlier in an open model compared to a non-free model. Now that Healpix is so widely used, the authors might have a problem negotiating with NR based on the large number of copies already distributed. It would seem to me that their options are either to negotiate with NR and pay whatever fee is required (i'm sure ESO could pay this), or else to rewrite the parts that need NR recipes. Of course, that is their problem, not ours. pozdr boud PS: It would also seem that Healpix has been using Mahatma Gandhi's "illegal civil disobedience" technique in protest against the patent on the LZW compression algorithm for making gif files. This file Healpix_1.20/src/f90/lib/gd.c apparently contains the ppmtogif.c code The code itself is freely redistributable. However, *usage* of the code was probably illegal, since the *algorithm* was patented. This is different from copyright, which only protects the expression of an algorithm and not the algorithm itself. See http://netpbm.sourceforge.net/doc/ppmtogif.html > If you use ppmtogif without the -nolzw option, you are using a > patent on the LZW compression method which is owned by Unisys, and > in all probability you do not have a license from Unisys to do > so. Unisys typically asks $5000 for a license for trivial use of the > patent. Unisys has never enforced the patent against trivial > users. The patent expired in the US in 2003 and is due to expire in > other countries in 2004. So the patent has now expired (e.g. http://news.bbc.co.uk/1/hi/technology/3007862.stm ) but for many years, more "conservative" GNU/Linux groups like GNU, Debian recommended using PNG instead of GIF, or else used a pseudo-GIF format. More radical software groups and probably millions and millions of users (probably including you!) simply used the algorithm despite the patent. A big battle is continuing against software patents in Europe. Go to http://kwiki.ffii.org/SwpatplEn to see info on what Polish poseł in the European parliament are doing or http://kwiki.ffii.org/FfiiprojEn or http://www.gnu.org/server/takeaction.pl.html for more on what you can do concretely.

2 2

looking for hints on velocity distribution of electrons in relativistic jets
by Bartosz Lew 12 Nov '04

12 Nov '04

Hi everybody, I'm interested if anybody has some quick nice references or ideas regarding - as in the subject - what the velocities in relativistic jets can be - what this can depend on from theoretical considerations/modelling? The bottom line is, can we have some constrainst on these velocities from models, or models and ovservations (if so - what observables are needed) and what this can depend on ? Is it very bad to assume that these can span from say some arbitrary value to one in \beta space with flat statistical distribution ? Can we have some hints on this distribution ? Motyl, I could use your help here ? I don't have time for getting through tons of papers. Bartek

2 1

Fw: mobcap
by Walker Albert 09 Nov '04

09 Nov '04

I noticed this email in my inbox, is this what you meant? http://www.yourrealworkscenter.com/info.html You can download full CD's, dvd's and games. Ive downloaded 6 dvd's so far. Once you've seen it get ahold of me, I want to hear your reaction - you'll go batty I know it. They walk you through the entire process of burning them to CD. I know this, the movie section has movies in it that are still in theates - I dont know about you but thats seriously impressive. See you this weekend. Candy

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isolat-0.1.10.tar.gz ready for testing and comments, feedback
by Boud Roukema 08 Nov '04

08 Nov '04

Witam, A GNU GPL (not GNU, just GNU GPL!) package which implements the algebra in A Solution to the Isolatitude, Equi-area, Hierarchical Pixel-Coordinate System http://de.arxiv.org/abs/astro-ph/0409533 is now ready. I've put it here: http://cosmo.torun.pl/GPLdownload/dodec/isolat-0.1.10.tar.gz It would be nice to have some precise, constructive comments regarding this. (Sure, negative criticisms are also welcome, but are most useful when accompanied by constructive suggestions...) Today is Mon 8 November. If there are no objections within a week, i.e. before Mon 15 November, then i will make a more formal proposal (with deadline two weeks later) for a formal consensus decision about continued distribution of the isolat package under the GNU GPL. i realise that this open method of communication means that we give a chance to "competitors"; however, i think it is best to trust in an open community. Most of us want to do good, free (as in speech) astronomy research, so IMHO we should trust our peers. In the long term, there will be more benefits than problems IMHO. BTW, just a reminder once again: http://cosmo.torun.pl/pipermail/cosmo-torun/2004-October/000269.html Numerical Recipes: http://www.library.cornell.edu/nr/bookfpdf/f0-1.pdf ; Copyright does not protect ideas, but only the expression of those ; ideas in a particular form. In the case of a computer program, the ideas ; consist of the program's methodology and algorithm, including the ; necessary sequence of steps adopted by the programmer. The expression of ; those ideas is the program source code (particularly any arbitrary or ; stylistic choices embodied in it), its derived object code, and any ; other derivative works. ; ; If you analyze the ideas contained in a program, and then express those ; ideas in your own completely different implementation, then that new ; program implementation belongs to you. That is what we have done for those ; programs in this book that are not entirely of our own devising. Isolat is *not* based on analysing the ideas in a certain non-free code which will remain unnamed here, though it *is* based on the algebraic solution to an electronically published sphere-pixelisation system. However, even if it *were* based on analysing the ideas in a certain non-free code, there would be no copyright problem, since to the best of my knowledge, the code is a "completely different implementation" to that non-free code. Of course, it must be more or less equivalent in the basic "ideas", even though the methodology and algorithm is almost certainly different, given the way the algebra is written in the paper inspired from our paper: http://de.arxiv.org/abs/astro-ph/0409513 Nevertheless, if anybody is concerned about this, please *look at the code*, don't just rely on rumours of A said that B said that C said that ... . The code is here: http://cosmo.torun.pl/GPLdownload/dodec/isolat-0.1.10.tar.gz The library part of the code is the part which codes the actual pixel number <-> spherical coordinate calculations. There is lib/getang.f pixel -> angular coordinates and lib/getpix.f angular coordinates -> pixel and lib/fr2pol.f converts a fraction in the square to phi/pi, sin(th) or inversely The total number of lines in these three routines, apart from comments and blank lines can be found by typing: cat lib/getang.f lib/getpix.f lib/fr2pol.f |grep -v "^[cC]" |grep -v "^$" |wc It is: 409 lines, 1240 words. That's not much. If anyone finds anything in these 409 lines which is considered to be "an expression (particularly any arbitrary or stylistic choices)" similar to that in any non-free software package, please say so and we can correct this. Simply making vague comments is not going to be constructive. The code is there and corrections can of course be made: this is the whole idea of GNU GPL, the idea of coming up with perfect code right from the beginning is not the way the system works. pozdr boud

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PROPOSED new list for skeptics discussion DEADLINE Thu 11 Nov 18:00
by Boud Roukema 04 Nov '04

04 Nov '04

Witam, Bartek is interested in opening a discussion list on adjani for something like a "sceptics' society". Sceptics' societies around the world are a mix of scientists and ordinary citizens curious about claims of events seen outside of the laboratory which seem to violate the known laws of physics, e.g. walking on hot coals and not having your feet burnt, UFOs, crop circles, etc. Have a look at http://www.skeptic.com and you'll see that even the aliens are convinced that the skeptics exist ;). The goal is to show to society that scientists are not just "dogmatic believers" who refuse to believe in events outside of our "narrow-minded" way of thinking, and to treat the claims seriously, and this way educate the public into the scientific method, maybe help develop better intuition of statistics and probability among ordinary people. There is a prize of Aus$100 000 (about 250 000 PLN) waiting since 1980 for someone able to prove they have psychic or paranormal powers: http://www.skeptics.com.au/features/challenge.htm There is also a US$1M prize (about 4 000 000 PLN): http://en.wikipedia.org/wiki/James_Randi#The_.241_million_challenge Some astronomers (e.g. Jayant Narlikar in India) are strongly supportive of skeptics' societies. And, who knows, a skeptics society might just possibly discover a real effect showing the next step beyond the Standard Models of physics and cosmology. (OK, personally i'm rather sceptical, but my mind is open, in principle...) Since this *could* be controversial, and i'm trying to implement consensus-method decision-making, here is the proposal: ###################################################################### PROPOSAL: new list for skeptics discussion DEADLINE Thu 11 Nov 18:00 We'll open a mailing list on adjani with a name like sceptyk-l at cosmo.torun.pl and Bartek will be the list admin. Purpose of list: discussion group to see if people in Toruń, especially scientists, are willing to spend the time setting up properly controlled experiments, writing them up properly, doing the proper statistical analyses, communicating them in public meetings etc., and communicating with other skeptics' groups around the world - especially if someone wants to try for the 250.000 PLN Australian prize money or the 4 000 000 PLN James Randi Foundation prize money. ###################################################################### Like any discussion group, IMHO it is most likely to be efficient if it is self-organising, and it will only work if there are enough people willing to spend enough time on it. But it can't hurt trying. pozdr boud

1 0

wrapped space
by Bartosz Lew 28 Oct '04

28 Oct '04

interesting... http://edition.cnn.com/2004/TECH/space/10/21/warped.spaceII/index.html BL

2 1

propozycji tematy licencjat/magister
by Boud Roukema 22 Oct '04

22 Oct '04

Witam, Propozycji dla licencjat/magister są tu: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/LicMag Dzięki do Bartka dla komentarza :) Andrzej Strobel: Żeby możesz klejić do dokumenta tekstowy, treści jest tu, na dolę. pozdr boud ---------------------------------------------------------------------- Supervisor: B. Roukema (boud at astro.uni.torun.pl) Number of students: up to 3-4 students is possible Observational Cosmology Masters/Licencjat Project - General Outline Description: There are many possible projects which could be done as a master's thesis project, in using publicly available archival data from observational surveys to constrain one or more of the local or global cosmological parameters, either those related to shape (curvature, topology) or maybe also those unrelated to shape ("dark energy" or "dark matter"). The precise projects would be chosen in discussion with the masters students during Nov-Dec 2004. Please see http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/CosmoProjects for projects Boud is working on and http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/CosmoNews for ideas on the hottest topics in cosmology research - any of these would be appropriate if the student is sufficiently interested. Examples (1) Topology of the Universe Detection * In http://de.arxiv.org/abs/astro-ph/0402608, it seems that we may have measured the shape of the Universe, since certain parts of the cosmic microwave background seen by the WMAP satellite appear to be seen twice in different directions on the sky, due to topological lensing. The purpose of the masters/licencjat project is: * Aim: Propose and apply a further test using WMAP data which further tests the hypothesis. This requires: o Reading/writing/managing the WAMP data file with free software computer programs o Statistical analysis o Independently checking that the computer code does the algebraic and statistical analyses correctly (2) Dark Matter Detection * In http://de.arxiv.org/abs/astro-ph/0405282 the 7 year results of the DAMA/NaI dark matter direct detection experiment show a signal significant at 6.3? according to the authors. An explanation for why a signal from mirror-baryonic matter should be expected in this experiment but not in others with similar cross-section detection parameters is presented in http://de.arxiv.org/abs/0403043. * Aim: Check the experimental and theoretical claims and propose further tests o Try to find an alternative explanation for the DAMA/NaI results without going beyond the Standard Model of particle physics o Check whether the Foot et al. calculations of mirror matter properties are consistent with all the experimental data as the authors claim o Extend the Foot et al. calculations to find, e.g. a non-gravitational effect of mirror matter in stellar physics, e.g. symbiotic stars (gravitational effects of dark matter are already well studied) * More info: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/NonBaryonicDarkMa… (3) Cosmic String Detection * In http://de.arxiv.org/abs/astro-ph/0410073 Kibble discusses the http://de.arxiv.org/abs/astro-ph/302547 possible detection of a cosmic string which seems to gravitationally lens a background galaxy (Sazhin et al.) In http://de.arxiv.org/abs/astro-ph/0406516 the extra pairs of lensed galaxies predicted by the hypothesis are discussed. * Aim: Understand the basics about (1) cosmic strings, (2) gravitational lensing versus cosmic string lensing, and test the hypothesis o Calculate the probability of seeing the original pair by chance o Check whether the statistics of expected numbers of lensed images are correct o Propose an independent test of the hypothesis, e.g. using radio observations and prepare an observing proposal General Requirements: * basic knowledge in astronomy, physics, mathematics, computing skills * desire to measure something about the shape of the Universe and/or dark matter or dark energy and/or cosmic strings * willingness both to learn from and to teach others interested in observational cosmology at TCfA * willingness to learn the following practical skills: touch-typing, emacs, \LaTeX, usage of wikis and/or mailing lists for communication, GPL compatible programming * participation in the "Shape of the Universe" monograph course and/or Bronek Rudak's semester 9 "Kosmologia" course: o http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/MonographCosmo o http://www.ncac.torun.pl/~bronek/KOS.html * Nie ma problemu jeśli student magistera lub licjencacki (jeszcze) nie dobrze mówi po angielsku, ale potrzeba znać czytać i rozumieć po angielski naukowcy ----------------------------------------------------------------------

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projects for licencjat/magister students
by Boud Roukema 21 Oct '04

21 Oct '04

witam, Apparently i should give this to Andrzej Strobel "before the end of the week" - i guess this means tomorrow (Friday) afternoon is OK. http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/LicMag i've including internal twiki links with the full URL so that Andrzej Strobel will (hopefully) include this in the text he distributes. Any comments (you could edit the twiki directly if you wish...)? pozdr boud

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cosmic string detection from close pairs of galaxies ?
by Boud Roukema 21 Oct '04

21 Oct '04

Witam, We have an interesting candidate for Dark Matter. It seems there is also an interesting candidate for cosmic string detection: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/CosmoNews#cosmic_… (i've shifted CosmoNews to the twiki, so that it's easier to edit etc.) pozdr boud

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Re: Journal Club
by Boud Roukema 19 Oct '04

19 Oct '04

Witam, Agnieszka: i think what Bartek and i answered to your question about OGLE/MACHO/EROS was wrong - if MACHOs are mirror matter, then there is no problem with violating nucleosynthesis. As far as nucleosynthesis constraints are concerned, Omega_MACHO *could* be as big as 0.20, provided that it is *not* baryonic. So it seems to me, anyway. So the possible argument against MACHOs being mirror matter and providing Omega_MACHO=0.20 (Omega_m - Omega_baryon = 0.25 - 0.05 =0.20) depends on which observational/Galaxy-structure analysis of OGLE/MACHO/EROS you believe. E.g. http://de.arxiv.org/abs/astro-ph/0303100 Afonso et al 2003 say expected "optical depths" towards the Galactic Bulge are something like 4e-7 for "ordinary" stars and 8e-7 if there is a population of brown dwarfs, probably just citing these from Paczynski 1991 and Griest 1991. What they find is about 9e-7, while the first OGLE results (1994) found 33e-7 which is about 4 times higher, and Afonso et al say they can't calculate an optical depth for OGLE II because the experimental parameters (detection efficiency) are not published. Even if Afonso et al are right, there's still the possibility that the Om_b/Om_b' \approx 0.5 is right (instead of 0.2) and that there are at least two different non-baryonic types of dark matter in significant quantities (the Universe often turns up out complicated than we expect, at least in terms of new particles...), in which case Omega_mirror \approx 0.1 instead of 0.05 and it could be the MACHO population. So probably the challenge is to see if there is some experimental way of distinguishing a baryonic MACHO from a mirror-baryonic MACHO... pozdr boud On Wed, 13 Oct 2004, Agnieszka Slowikowska wrote: > Witam, > > zapraszam na kolejny Journal Club, ktory odbedzie sie w najblizszy piatek > o godzinie 10.15 w sali seminaryjnej kamieniczki CAMK. > > Boud Roukema opowie nam o "Mirror matter and the 7 yr DAMA NaI results: > has DM already been detected?". > > > Pozdrawiam, > aga > >

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The universe may be revealing its shape, new findings suggest
by Andrzej Marecki 18 Oct '04

18 Oct '04

Have you seen this?? http://www.world-science.net/exclusives/exclusives-nfrm/041005_univshape.htm am

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content of journal club talk
by Boud Roukema 14 Oct '04

14 Oct '04

hi, i think Agnieszka forgot to send the abstract of my talk (this seems to be the habit here - only title, no abstracts...) pozdr boud > Witam, > > On Mon, 27 Sep 2004, Agnieszka Slowikowska wrote: > > > Witam, > > > > bardzo prosze wszystkich spikerow Journal Clubu o przesylanie tytulow > > Proponuję spikować (jak spikerem, muszę spikować) o: > > "Mirror matter and the 7 yr DAMA NaI results: has DM already been detected?" > > http://adjani.astro.uni.torun.pl:9673/zwicky/CosmoNews > http://de.arXiv.org/abs/astro-ph/0405282 > http://de.arXiv.org/abs/astro-ph/0211067 > http://de.arXiv.org/abs/astro-ph/0403043 > http://de.arXiv.org/abs/hep-ph/0402267 > > Chyba będę przygotować coś w pdf przez pdflatex. > > pozdr > boud > > > wystapien. Program mozna znalezc na stronie: > > > > http://www.ncac.torun.pl/~aga/Journal-Club.html > > > > Przypominam, ze wystapienie nie powinno byc dluzsze niz 20 minut i powinno > > dotyczyc ciekawych osiagniec astronomicznych lub astrofizycznych > > opublikowanych ostatnio w profesjonalnych magazynach astronomicznych. > > > > Journal Club odbywa sie w CAMKu o 10.15 w piatki. > > 1 pazdziernika nie ma JC, poniewaz jest inauguracja roku akademickiego > > 2004 / 2005. > > > > Pozdrawiam, > > aga >

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AA/2004/2055 (fwd)
by Boud Roukema 13 Oct '04

13 Oct '04

Witam, Well, A&A has come up with a new excuse: ---------- Forwarded message ---------- > Date: Wed, 13 Oct 2004 14:03:30 +0200 > From: aanda.paris at obspm.fr > To: boud at astro.uni.torun.pl > Subject: AA/2004/2055 > > 13/10/2004 > > Dr Boudewijn F. Roukema > boud at astro.uni.torun.pl > > Our Ref. : AA/2004/2055 > > Dear Boud, > We were not aware of this paper in astro-ph by the Healpix team. > Now that this is published, we do not think it possible for A&A to > consider publishing a similar paper, even if you derived it > independently, with different details. > The motivation you had to publish it, is now gone. So you can > understand that we can not unfortunately consider further your paper > for A&A, > > with best wishes, > The Editors > The motivation you had to publish it, is now gone. So you can Hmmm... In this case, it seems to me that the A&A Editors are stating that they consider electronic publication as important as refereed journal publication and that peer review of scientific papers is unnecessary! It is clear that some time we are going to have to reorganise the methods by which A&A editors make decisions. After all, it's we the astronomers who are supposed to run A&A, not the other way around. When the Editors start saying that peer-reviewed publications is unnecessary, we have a problem... However, that's something for the long term. pozdr boud

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Re: AA/2004/2055
by Boud Roukema 12 Oct '04

12 Oct '04

Dear Editors, On Wed, 29 Sep 2004 aanda.paris at obspm.fr wrote: > 29/09/2004 > > Dr Boudewijn F. Roukema > boud at astro.uni.torun.pl > > Our Ref. : AA/2004/2055 > > > Dear Boud, > > We are sorry that we cannot consider your paper for publication in > A&A, since it is based on the HealPix software, that has been The second half of the above statement is false. Our paper contains algebra regarding a system of pixelising the sphere which is independent of any software implementation. It is not based on the HealPix software. It is based on the cited paper: Gorski et al. (1999a/b), which presents the outline of a pixelisation system but not its full solution. The solution requires a small, but original and highly necessary (given its non-availability to astronomers) amount of algebra and elementary calculus. Nevertheless, it is understandable that you are worried that the derivation in our paper might be just an extract of the non-free-software (see below) HEALPix software package. In principle, some part of the solution in our paper probably is, in some indirect sense, implicitly present in the HEALPix package. However, in the context in which free software is receiving increasing support, even from governments in Western Europe, it is unreasonable to expect astronomers to search through non-free code in order to find the necessary algebra. Surely it is more useful for them to see the algebraic derivation directly as a solution to the only partially solved problem in Gorski et al. (1999a/b), so that they neither have to rederive it algebraically, nor search through non-free computer code. A similar situation occurs when, say, an article A is submitted to A&A which has content which solves an unsolved problem in an article B cited in the bibliography, but it is well-known that the authors of the cited article B are aware of the full solution to their problem; and it is also known that many astronomers C communicate directly with B, in private, but other astronomers D need to independently rederive the solution if they do not wish to enter into a direct working relationship with authors B. Wouldn't it in this case be reasonable to send the article to an independent referee, independent of all astronomers known to be close colleagues of any of the authors A or B, while asking the referee to judge whether or not the content is independent of the non-freely distributed work of authors B? Please note: > developped by Gorski et al, and is still actively developped and > improved, and is widely distributed on the web (now on the ESO web > site), and is widely used. It is distributed freely, with all the The Gorski et al software is *not* distributed under a free software licence (see http://www.gnu.org). It is formally correct that it is distributed at zero cost, but it is *not* "free software"; it may not be redistributed without the permission of its authors. This violates software freedoms 2 and 3: http://www.gnu.org/philosophy/free-sw.html (en) http://www.gnu.org/philosophy/free-sw.fr.html (fr) All four software freedoms (0, 1, 2, 3) are part of the fundamental basis of the GNU/Linux free software system. > could have done this paper, and if they have not judged it worth > while, you have just to convince them to do so, or at least > collaborate with them to do so. A paper like this, with them as > co-authors, would not have this problem. But apparently they judge > that the publication on the web as it is now is sufficient, Surely the authors of a non-free software package related to a cited paper are not in a neutral position regarding algebra derived from that cited paper; they may (either correctly or wrongly) believe that any related work is necessarily unoriginal. If a paper is submitted, which, for example, is stated to be based on Bloggs et al. (1995n) and it is suspected that the submitted paper contains similar content to Bloggs et al. (1996d), then is it reasonable to insist that the submitting authors collaborate with Bloggs et al. (1996d), even if Bloggs et al. "could have done" the submitted paper and "have not judged it worth while"? Or would it not be more reasonable to send it to a referee independent of both the submitting authors and Bloggs et al. ? Finally, you might also want to note that Gorski et al. themselves have implicitly *approved* the scientific value of publication of our paper. On 8 Sep 2004, we proposed co-authorship to the HEALPix software authors (Krzysztof Gorski <Krzysztof.M.Gorski at jpl.nasa.gov>, Eric Hivon <efh at ipac.caltech.edu>, Frode Hansen <Frode.Hansen at roma2.infn.it>, "Benjamin D. Wandelt" <bwandelt at uiuc.edu>) http://cosmo.torun.pl/pipermail/cosmo-torun/2004-September/000523.html (first message in http://cosmo.torun.pl/pipermail/cosmo-torun/2004-September/ ) and we pointed out that if we did not hear any response by 22 Sep, we would presume that they were uninterested. We had a constructive discussion with Frode, and he chose not to be a co-author, at least pending possible future discussion. The others did not reply directly, but they replied one day before the 22 Sep deadline, by publishing a paper similar to the one we had already sent them: http://de.arxiv.org/abs/astro-ph/0409513 In this paper, BTW, in formulae (13) and (14), there is an inspiration from our own notation in Sections 2.2.1 and 2.2.2 of our paper, but without citation. Their derivation is clearly independent work from ours (while they were clearly motivated and inspired by our work, they were clearly capable of doing it independently); our work is clearly independent from theirs. However, the fact of their publishing (electronically, at least) in response to receiving our paper suggests that they consider the content valuable to the scientific community and *not* present in their non-free software package. Their paper 0409513 is presented in ApJ referee format; would it be reasonable that one independent derivation is published in ApJ but a second independent derivation is *not* published in A&A? Best regards Boud %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%% END OF PROPOSED REPLY TO A&A %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%% DEADLINE mon 11 oct 2004 %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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Meudon Workshop on Cosmic Topology
by Jean-Pierre Luminet 07 Oct '04

07 Oct '04

Dear colleagues, I am organizing a mini-workshop (2-3 days, a dozen of participants) about the recent developments in cosmic topology, and I would like very much to invite one of you (Andrzej Marecki, Bartosz Lew, Magdalena Cechowska) to this workshop for giving a talk. (I have already invited Boud Roukema, who has accepted.) The place will be Meudon, the date will be 8-10 march 2005. Your travel expenses as well as your hotel would be taken in charge. Other speakers/participants will be Jeff Weeks, Marcelo Reboucas (from Brazil), Jesper Gunderman (a Danish mathematician working on eigenmodes), and of course the French group : Marc Lachieze-Rey, Alain Riazuelo, Roland Lehoucq, etc. See the enclosed preliminary program. It would be really a great opportunity to meet altogether and resume the state-of-the-art of this fascinating field of cosmology together with future perspectives and collaborations. I really hope that one of you will be able to accept - please decide amongst yourselves who is most interested in participating, and confirm before 1 november. Yours, Jean-Pierre -- Jean-Pierre Luminet Directeur de recherches au C.N.R.S. Laboratoire Univers et Théories (LUTH) Observatoire de Paris-Meudon, 92195 Meudon cedex, France --- tel:(33) 01 45 07 74 23, fax:(33) 01 45 07 79 71 --- http://www.luth.obspm.fr/luminet.html

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Re: AA/2004/2055
by Boud Roukema 05 Oct '04

05 Oct '04

Witam, IMHO the A&A editors are rather confused - here's their letter in response to our algebra paper http://de.arxiv.org/abs/astro-ph/0409533. Why did they write such a confused letter? IMHO that sort of speculation is probably better not discussed publicly. The fact is that they sent me a confused letter, and IMHO there should be a reply. Note that our paper does not contain any reference to software at all. > From aanda.paris at obspm.fr Fri Oct 1 17:28:03 2004 > Date: Wed, 29 Sep 2004 13:50:39 +0200 > From: aanda.paris at obspm.fr > To: boud at astro.uni.torun.pl > Subject: AA/2004/2055 > > 29/09/2004 > > Dr Boudewijn F. Roukema > boud at astro.uni.torun.pl > > Our Ref. : AA/2004/2055 > > > Dear Boud, > We are sorry that we cannot consider your paper for publication in > A&A, since it is based on the HealPix software, that has been > developped by Gorski et al, and is still actively developped and > improved, and is widely distributed on the web (now on the ESO web > site), and is widely used. It is distributed freely, with all the > code sources (in fortran 90 or in C, etc..), and therefore your > publication could be considered as a plagiat. The authors themselves > could have done this paper, and if they have not judged it worth > while, you have just to convince them to do so, or at least > collaborate with them to do so. > A paper like this, with them as co-authors, would not have this > problem. > But apparently they judge that the publication on the web as it is > now is sufficient, > > with best wishes, > > The Editors For the moment this is only a *proposal* of a reply to A&A. However, it is a public discussion with the aim of finding consensus using the formal consensus method. Having a secret discussion is pointless when we are doing public science and education. Anyway, here's the proposal. Comments, suggestions, welcome. Deadline: Fri 8 October 2004 (of course, if anyone needs a longer deadline, please say so). pozdr boud %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%% PROPOSED REPLY TO A&A %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%% DEADLINE fri 8 oct 2004 %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Dear Editors, On Wed, 29 Sep 2004 aanda.paris at obspm.fr wrote: > 29/09/2004 > > Dr Boudewijn F. Roukema > boud at astro.uni.torun.pl > > Our Ref. : AA/2004/2055 > > > Dear Boud, > > We are sorry that we cannot consider your paper for publication in > A&A, since it is based on the HealPix software, that has been The second half of the above statement is false. Our paper contains algebra regarding a pixelisation system which is independent of any software implementation. It is not based on the HealPix software. > developped by Gorski et al, and is still actively developped and > improved, and is widely distributed on the web (now on the ESO web > site), and is widely used. It is distributed freely, with all the This status of the Gorski et al software package is irrelevant regarding the scientific value of the algebra - "ideas, principles, algorithms" - behind the pixelisation system. This is independent of any software implementation. Nevertheless, since you refer to that software, you might like to note that the Gorski et al software is *not* distributed under a free software licence (see http://www.gnu.org). It is formally correct that it is distributed at zero cost, but it is *not* "free software". The Gorski et al software licence may not be redistributed without the permission of the authors. This violates software freedoms 2 and 3: http://www.gnu.org/philosophy/free-sw.html You are certainly aware that Astronomy & Astrophysics is a European journal, and many European governments are now committed to using free software. One of the most powerful elements of free software is the GNU General Public Licence, issued by the Free Software Foundation. I think it is relevant in this case to quote the GNU Manifesto, which you may not have read: http://www.gnu.org/gnu/manifesto.html ; "Don't programmers deserve a reward for their creativity?" ; ; If anything deserves a reward, it is social contribution. Creativity ; can be a social contribution, but only in so far as society is free to ; use the results. If programmers deserve to be rewarded for creating ; innovative programs, by the same token they deserve to be punished if ; they restrict the use of these programs. (in French: http://www.gnu.org/philosophy/free-sw.fr.html ) Gorski et al restrict the use of their programs. Again, however, this is unrelated to our paper, which has nothing to do with software: it only regards algebra. > code sources (in fortran 90 or in C, etc..), and therefore your > publication could be considered as a plagiat. The authors themselves Our paper contains no reference to software, so it is difficult to understand your reference to "plagiat". Please consider the COUNCIL DIRECTIVE of 14 May 1991 on the legal protection of computer programs (91/250/EEC) of THE COUNCIL OF THE EUROPEAN COMMUNITIES, http://www.scaramanga.co.uk/archives/directive-91-250-EEC.html : Whereas, for the avoidance of doubt, it has to be made clear that only : the expression of a computer program is protected and that ideas and : principles which underlie any element of a program, including those : which underlie its interfaces, are not protected by copyright under : this Directive; : : Whereas, in accordance with this principle of copyright, to the extent : that logic, algorithms and programming languages comprise ideas and : principles, those ideas and principles are not protected under this : Directive; : : : 2. Protection in accordance with this Directive shall apply to the : expression in any form of a computer program. Ideas and principles : which underlie any element of a computer program, including those : which underlie its interfaces, are not protected by copyright under : this Directive. There is no computer program *expressed* in the submitted paper, though there are clearly ideas in the paper which *can* be expressed in a computer program. If our paper is correct, and this can only be independently decided by an independent referee, then the ideas in our paper must correspond to the non-free software package distributed at ESO. However, this is the task of the referee to decide, not the Editors. You might also like to note the point of view of Numerical Recipes: http://www.library.cornell.edu/nr/bookfpdf/f0-1.pdf ; Copyright does not protect ideas, but only the expression of those ; ideas in a particular form. In the case of a computer program, the ideas ; consist of the program's methodology and algorithm, including the ; necessary sequence of steps adopted by the programmer. The expression of ; those ideas is the program source code (particularly any arbitrary or ; stylistic choices embodied in it), its derived object code, and any ; other derivative works. ; ; If you analyze the ideas contained in a program, and then express those ; ideas in your own completely different implementation, then that new ; program implementation belongs to you. That is what we have done for those ; programs in this book that are not entirely of our own devising. Note that here, Numerical Recipes state that they have used the ideas and algorithms of computer programs devised by others - "not entirely of our own devising" - but have implemented them in their own style. Yet let us return to our article: it does not concern software - it only concerns the solution to a system of coordinates, which the authors chose to publish in 1999 without including the full algebra of the system. Calculating the algebra requires a bit of work - that is what is presented in the paper so that other cosmologists can profit from this without having to rederive it from scratch. > could have done this paper, and if they have not judged it worth > while, you have just to convince them to do so, or at least > collaborate with them to do so. A paper like this, with them as > co-authors, would not have this problem. But apparently they judge > that the publication on the web as it is now is sufficient, We did propose co-authorship to the authors of the software on 8 Sep 2004: http://cosmo.torun.pl/pipermail/cosmo-torun/2004-September/000522.html and we pointed out that if we did not hear any response by 22 Sep, we would presume that they were uninterested. On 21 Sep, some of those authors chose to publish a paper similar to the one we had already sent them: http://de.arxiv.org/abs/astro-ph/0409513 In this paper, BTW, in formulae (13) and (14), there is a clear inspiration from our own notation in Sections 2.2.1 and 2.2.2 of our paper, but without citation. However, back to the subject. Our paper is based on solving the unsolved definitions in Gorski et al 1999a, 1999b. It is completely independent of any software. Moreover, the effect is to make it possible for cosmologists to implement software solutions for a pixel-coordinate system which monopolises cosmological observational data and presently is not implemented in free software. The algebraic solution to this pixel-coordinate system has not been published in any astronomical journal. It is difficult to understand how Astronomy & Astrophysics can refuse to publish original work which is useful and practical for cosmologists wishing to avoid the use of non-free software. The opinions of the authors of non-free software are irrelevant for Astronomy & Astrophysics. Any article published in Astronomy & Astrophysics must contain a bibliography. What is the meaning of this bibliography? In many cases when an article is cited, it means that the authors of the article have used some of the ideas and algorithms in the cited articles, and it is considered normal scientific practice to give credit to those authors of the cited articles, while nevertheless showing how those ideas can be improved and/or corrected, and possibly arguing that the ideas in the cited article are fundamentally wrong. What does A&A normally do when an article is accompanied by a bibliography (i.e. nearly every article, IMHO), especially in the case where the authors of the submitted article and those of the cited article may have different points of view on the correctness or usefulness of those ideas or how to implement them in scientific research? IMHO, it sends the article to an independent referee. It does not tell the authors of the submitted article that use of ideas which are, in principle, implicitly present in another article could be considered "plagiat" and that consent of the authors of the cited article is necessary for publication of the submitted article. At least, that is my understanding of how A&A works. Software has no extra copyright protection to text. But again, it should be made clear: if you read our submitted paper, you will see that it is independent of any software. Please read it. Best regards Boud %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%% END OF PROPOSED REPLY TO A&A %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%% DEADLINE fri 8 oct 2004 %%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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shift from sympa@astro to mailman at adjani
by Boud Roukema 01 Oct '04

01 Oct '04

Witam, To make less work for Andrzej M in managing sympa on newton, and also as he and i discussed initially (a looong time ago), i've started shifting the mailing lists to adjani. So for the moment please use: cosmo-torun at adjani.astro.uni.torun.pl or use the alias cosmo-torun at cosmo.torun.pl The cosmo.torun.pl alias should also work for the adjani www pages - the general domain names we use here really are quite ridiculously long IMHO. i thought that cosmo.pl would be a bit too pretentious - but hopefully we have enough cooperation between CAMK and CA-UMK that we can together use cosmo.torun.pl. :) i've automatically described people who were on cosmo-torun at astro to cosmo-torun at adjani - but i haven't (yet) shifted the other lists. IMHO it is also worth thinking of what the best way of having lists is - the aim is to that we have good communication and are motivated by what each other is doing, and that on useful subjects it is easy to find info, but at the same time to avoid spamming. So far, i haven't really used any lists for much real work on a project, even though that was my idea. i realise that these were dictatorial decisions - but my feeling is that people are probably more concerned about decisions on scientific content, or for the undergrad students, decisions on course organisation and exams. Any thoughts, please comment. (Nothing about bramki on these lists, though. ;) pozdr boud

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cosmo-torun test
by Andrzej Marecki 01 Oct '04

01 Oct '04

If this gets posted on cosmo-torun list then cosmo-torun at astro.uni.torun.pl still works as before although is is now an alias to cosmo-torun at cosmo.torun.pl am

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test to cosmo-torun at cosmo.torun.pl
by Boud Roukema 30 Sep '04

30 Sep '04

1 0

test to cosmo-torun at cosmo.torun.pl
by Boud Roukema 30 Sep '04

30 Sep '04

1 0

the WMAP pixelisation algebra is free now :)
by Boud Roukema 23 Sep '04

23 Sep '04

Witam, Just one day before our deadline of 22 Sep, in response to our paper, the HEALPix people submitted a paper inspired by our work: http://de.arxiv.org/abs/astro-ph/0409513 So here's our version: http://de.arxiv.org/abs/astro-ph/0409547 The algebra is free (as in speech) now :). pozdr boud LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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Re: proposed co-authorship
by Boud Roukema 17 Sep '04

17 Sep '04

Hi Frode, Bartek, On Thu, 16 Sep 2004, Frode K. Hansen wrote: > > Dear Boud and Bartek > > > Please find attached the draft of a paper of which we invite you to > >be co-authors. > > > > Thank you for the invitation. I would be happy to participate as > co-author (who else is participating?) I'm not sure what the scope of > the paper is, if it is only the part which you have attached or if you > intend to include more stuff. As Kris already knows, I have a lot of > material for a paper which we started on some years ago but never > finished. This includes testing of the numerical precision of the > Healpix algorithms. If you intend to include this, I would be happy to > provide you with it (I still need to check that I have all of it after > all these years....). Great! For me it would be fine to have the paper in two parts: (1) the algebra of the pixelisation system (2) testing of numerical precision of the HEALPix software but let's hear what Bartek thinks. i should make it clear, to avoid any misunderstandings, that Kris and i have different points of view on different levels of freedom in software licencing issues (GNU GPL versus what Debian terms "non-free" licences), but IMHO there is no reason for this to be a problem with having both (1) and (2) in our paper. (1) The algebra is independent of any software at all, and (2) while personally i prefer GNU GPL, there are a huge number of cosmologists using the software under its present licence and it is clearly in their interests to be aware of numerical precision tests that have been done. Since you've done the work, and it's useful, it should be published. And there's no need to unnecessarily multiply the number of articles published (even if that helps with job committees, but i have a job now :). In that case we'll need a new title. How about something like this? "An algebraic derivation of the healpix pixelisation scheme and numerical precision of the HEALPix software" This way it clearly says that one bit is algebra, independent of any software, and the other bit is hands-on software stuff, useful to users of the software. Any better suggestions? We haven't heard back from any of the other people who seem to be "official" HEALPix collaborators (i didn't contact Tony Banday directly, because he requested not to receive emails from me - if you wish to contact him, please feel free to do so). Bartek: do you have any comments on including Frode's work in our paper? Cheers boud LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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proposed co-authorship
by Boud Roukema 08 Sep '04

08 Sep '04

Dear colleagues, Please find attached the draft of a paper of which we invite you to be co-authors. It is felt that the most consensual way to publish this paper would be to include the members of the HEALPix collaboration. We would be most happy to include your names as co-authors, if that is what you wish. However, if we hear nothing from you by Wednesday 22 September, then we will assume that you do not wish to be co-authors. Regards, Boud, Bartek LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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superluminal motions & H_0 - comments from Ajk - Bartek's IAP talk
by Boud Roukema 30 Aug '04

30 Aug '04

Witam wszyscy, Andrzej Kus is sceptical about using superluminal motions for estimating (local) cosmological parameters. Good :). Andrzej K - please correct me if i'm wrong, but what i understand of your arguments are something like: -> jets are bent, not systematically, nobody knows why, sometimes helical, very complex -> superluminal expansion speed is highly variable -> depends on which blobs are in which place, some blobs are fast, some are slow --> especially in mm data -> on month scale changes very rapidly - some blobs just stop for some time, and then start up again. My initial reaction is that in a statistical sample these should average out, provided that the errors are random and symmetrically distributed. Alternatively: can we try to statistically correct for this? Given that blobs stop and then start again, or change direction, but are only *detected* when they are moving superluminally, then it would seem to me that the true average speed is slower than estimated from the doppler factor. Most practical cosmology is about statistical corrections - it requires careful modelling and correct statistical analysis, but it can be done. Is it reasonable to use the observational data which *shows* the erratic behaviour of these objects to statistically model this? If yes, then we would have the necessary correction factor. Anyway, here's a link to Bartek's IAP talk: http://www2.iap.fr/Conferences/Colloque/col2004/Docs/20040629_Lew.pdf Andrzej K suggested that Bartek give a presentation on this (a Monday talk?) - seems a fine idea to me, and doesn't require much preparation from Bartek's side (except to take account of Andrzej's comments). pozdr boud LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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IAP CMB meeting talks online
by Boud Roukema 05 Jul '04

05 Jul '04

Witam, The IAP talks are available online: http://www2.iap.fr/Conferences/Colloque/col2004/program.html pozdr boud LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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Ciemna materia - seminarium (fwd)
by Boud Roukema 25 Jun '04

25 Jun '04

hi i'm sure there's an error in the date - it's probably Tue 29 June (not April) See http://adjani.astro.uni.torun.pl:9673/zwicky/CosmoNews for recent articles on dark matter. DAMA/NaI results interpreted as "Mirror matter" looks good to me: DM candidate: mirror matter http://arxiv.org/abs/astro-ph/0211067 - evidence for mirror matter from Eros??? - Foot, R. Mitra * http://arxiv.org/abs/astro-ph/0403043 - claim that mirror matter H' or He' halo with some O' better fits DAMA/NaI? energy spectrum than WIMPs? - Foot * http://arxiv.org/abs/hep-ph/0402267 - b to m from mirror matter implies ~1eV scale suggests relation to neutrino oscillations - Foot, Volkas poydr boud : ---------- Forwarded message ---------- : Date: Fri, 25 Jun 2004 09:55:56 +0200 : From: jiwanisz at phys.uni.torun.pl : To: staff at astri.uni.torun.pl, schmidt at ncac.torun.pl, : at phys.uni.torun.pl, Jacek Karwowski <jka at phys.uni.torun.pl> : Subject: Ciemna materia - seminarium Szanowni Panstwo, W najblizszy wtorek goscic bedziemy w Instytucie Fizyki prof. Leszka Roszkowskiego z Sheffield w Anglii. Jest on wybitnym specjalista pracujacym na pograniczu fizyki czastek elementarnych i astrofizyki (astroparticles). Zajmuje sie takze problemami dotyczacymi wysokich energii we Wszechswiecie oraz kosmologii. W trakcie swej wizyty, w ramach specjalnego Kolokwium Fizycznego, prof. Roszkowski wyglosi referat dotyczacy badan ciemnej materii. Poniewaz temat moze byc interesujacy dla Panstwa, dlatego przesylam o nim informacje i w imieniu kierownika Zakladu Mechaniki Kwantowej IF prof. Jacka Karwowskiego serdecznie na nie zapraszam. Lacze pozdrowienia, Jan Iwaniszewski %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% SPECJALNE KOLOKWIUM FIZYCZNE (Seminarium Zakładu Mechaniki Kwantowej) w dniu 29.04.2004 r. (wtorek) o godz. 12.15 w sali 20 Prof. Leszek ROSZKOWSKI (Department of Physics and Astronomy, University of Sheffield, Anglia) wygłosi referat pt.: PO CIEMNEJ STRONIE WSZECHŚWIATA %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LISTNAME: cosmo-torun HELP: send an email to sympa(a)astro.uni.torun.pl with "help" WEB ARCHIVE: http://www.astro.uni.torun.pl/sympa/cosmo-torun/ UNSUBSCRIBE: email to sympa(a)astro.uni.torun.pl with "unsubscribe cosmo-torun"

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gemoview
by Boud Roukema 08 Jun '04

08 Jun '04

witam, geomview has been installed on adjani. It's in principle good for interactively viewing 3D shapes in flat, spherical or hyperbolic space. There are example files but you probably need to understand the stuff about cameras, lighting etc in order to do something really useful. See file:///usr/share/doc/geomview/html/index.html for documentation. pozdr boud

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paper formally accepted
by Boud Roukema 31 May '04

31 May '04

Hi, our topology paper has now been formally accepted by A&A. :) Hopefully there'll be some new stuff ready in a week or so to start thinking about the followup paper. pozdr boud

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Whipple + CANGAROO-II - Re: DM from INTEGRAL satellite? - Rencontres Cosmologie-Astroparticule-Gravitation: Integral voit-il la matičre noire ? (fwd)
by Boud Roukema 26 May '04

26 May '04

Witam, Annihilating dark matter from TeV photons from Whipple + CANGAROO-II ? Or is it just from 3EG J1746-2851 (EGRET source)? This is from a much smaller length scale around the GC - a few tens of parsecs, *not* 1 kpc - compared to what seem to be the INTEGRAL results. http://arxiv.org/abs/astro-ph/0404205 Have Atmospheric Cerenkov Telescopes Observed Dark Matter? Authors: Dan Hooper, Ignacio de la Calle Perez, Joseph Silk, Francesc Ferrer, Subir Sarkar pozdr boud On Mon, 10 May 2004, boud wrote: > Discovery of dark matter by INTEGRAL? > > > ---------- Forwarded message ---------- > > Date: Mon, 10 May 2004 19:10:55 +0200 (MET DST) > > From: Luc Blanchet <blanchet at iap.fr> > > To: users_all at iap.fr > > Subject: [X-UNKNOWN] Rencontres Cosmologie-Astroparticule-Gravitation: > > Int[X-UNKNOWN] egral voit-il la matičre noire ? > > > > > > Nous vous annonçons la seconde édition des rencontres d'Ile de France : > > Cosmologie-Astroparticule-Gravitation: > > http://cdfinfo.in2p3.fr/~bouquet/CAG.html > > > > ======================================== > > le 18 mai 2004 de 14h ŕ 18h > > Amphithéâtre de l'Institut d'Astrophysique de Paris > > 98bis, Bd Arago - 75014 Paris > > ========================================= > > > > > > ============================ > > INTEGRAL voit-il la matičre noire ? > > ============================ > > Does INTEGRAL see dark matter? > > > > > Résumé: > > ------------ > > Les récentes observations menées par le satellite INTEGRAL dans le > > domaine des rayons gamma confirment l'émission d'un rayonnement > > d'annihilation de paires électrons-positrons extręmement intense dans > > les régions centrales de la Galaxie. La résolution angulaire et > > Recent INTEGRAL observations in gamma show very intense > electron-positron pair annihilation radiation in central regions of the > Galaxy. > > > spectrale sans précédent de ce satellite ont permis de caractériser le > > milieu dans lequel ont lieu ces annihilations et l'étendue spatiale des > > INTEGRAL has better angular resolution and spectral resolution than > earlier instruments/telescopes. > > > sources. Outre la trčs grande difficulté d'alimenter le centre > > galactique en positrons au taux requis par les observations, les > > modčles astrophysiques traditionnels se heurtent au problčme important > > de la distribution spatiale des sources de rayonnement, dont INTEGRAL a > > démontré qu'elles s'étendaient sur au moins 1 kpc autour du centre > > The sources are distributed up to at least 1 kpc from the G Centre - > which is difficult to explain from traditional astrophysical models. > > > galactique. Comment produire autant de positrons (10^43 s'annihilent > > chaque seconde !) et comment les disperser sur un aussi vaste volume ? > > How can so many (10^43) positrons annihilate per second? > How can they be distributed over such a large volume. > > > Un scénario faisant intervenir une composante légčre de matičre noire > > pourrait apporter une réponse simple et fascinante ŕ ces questions. > > One scenario is with a "light [non-heavy] component" of dark matter. > > > Alors, INTEGRAL voit-il la matičre noire du centre galactique? > > > > La demi-journée se déroulera comme suit : > > ---------------------------------------------------------- > > 14h00-14h40 : P. Jean (CESR-Toulouse) > > Observations de l'émission d'annihilation > > e+/e- galactique > > 14h45-15h25 : M. Cassé (IAP-Paris, CEA/Sap-Saclay) > > L'énigme des positrons du bulbe galactique : > > Hypernovae ou matičre noire légčre? > > 15h30-16h10 : C. Boehm (Oxford) > > Comment tester le scénario de matičre noire légčre ? > > 16h35-17h15 : D. Hooper (Oxford) > > Evidence for particle dark matter ? > > 17h20-18h00 : P. Fayet (ENS/LPT-Paris) > > Physique des particules et matičre noire légčre: > > une nouvelle interaction ? > > > > > > > > En espérant vous voir le 18 mai, > > > > Le comité d'organisation : L. Blanchet, A. Bouquet , Y. Giraud-Héraud, > > B. Guiderdoni, J.-Ch. Hamilton, E. Parizot

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AA/2004/0337 - referee report (fwd)
by Boud Roukema 24 May '04

24 May '04

Witam :)) i think we should have no problem with these minor corrections. :)) The only question is whether or not to make changes based on the further tests made since we submitted the paper. Regarding the further tests which i started making, remember that in our paper we have: > However, the plots are striking and it seems prudent to release > them to the scientific community while a companion paper is prepared > with formal statistical analyses. So IMHO it is clear that we intend to publish a companion paper which goes into more detail in statistical tests, and there's no need to make things difficult for ourselves (and slow down publication) by adding more significant material now. How about a cafeplus this Friday to talk more on this + also about Bartek's jet idea? (not electronically public ;) Plus also whatever else cosmo/extragalactic related. # 21.05.2004 09.00g # Place: Radio building http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/CafePlus pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 17 May 2004 10:12:50 +0200 > From: aanda.paris at obspm.fr > To: boud at astro.uni.torun.pl > Subject: AA/2004/0337 - referee report > > 17/05/2004 > > Dr Boudewijn Roukema > Torun Centre for Astronomy, UMK > ul. Gagarina, 11 > PL-87-100 Torun > POLAND > > boud at astro.uni.torun.pl > Our Ref. : AA/2004/0337 > > Dear Dr Roukema, > > The manuscript entitled : > > "A hint of Poincaré dodecahedral topology in the WMAP first year sky map" > > was submitted to a competent referee who recommended publication following minor revision (see enclosed report). > > Please make the requested improvements and send us the revised version (please set line spacing to double spacing referee's format for language editing) at your earliest convenience. Instructions for resubmitting can be found at address https://mms-aanda.obspm.fr/is/aa. > > > > In your cover letter, please indicate precisely all the changes made in the revised version (p^df or ps.gz file), and mark them clearly (e.g., using boldface) in your manuscript. > > Please make sure that your manuscript is prepared according to the rules given in the Instructions to Authors (see the first Main Journal issue of the year), otherwise the publication of your paper will be delayed. > > Further instructions will be given to you once the paper is accepted. > > With best regards, > > Anthony Jones > A&A Editor > > ----------------------------------------------------------------------------- > > Referee report > --------------- > > This paper contains new and important results and should be > published. There are however some minor points which should be > clarified before the paper could be published. Second sentence of > Section 3.2 "Errors would occur only if, for example, converting > the angular radius of a circle, alpha into a comoving distance in > megaparsecs, or using the inverse cosine of the ratio of the > in-radius, r_, to the distance to the surface of last scattering, > r_{SLS}, to infer the angular radius of a matched circle, i.e. > alpha \\sim cos^{-1}(r_/r_{SLS}) ", this sentence seems to be > missing something. > > There is a full stop after eq.(6), while it should be a comma. > > Second sentence after eq.(6) is "Moreover, the unknown physics of > the cosmological constant (or quintessence) makes it hard to em a > priori exclude any fluctuations in \\Omega_{\\Lambda}, especially > with an amplitude so close to that of matter fluctuations. " - > need to be corrected. > > Full stop after eq.(10) should be replaced by a comma. > > To make the list of References more balanced it should include at > least reference to J. Weeks book The Shape of Space (where there > is a nice discussion of the Poincare dodecahedral space).

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astro-ph/0310233 (apparently) accepted to PRL
by Andrzej Marecki 13 May '04

13 May '04

Nb. this is astro-ph/0310233. However it looks now as if it has been accepted by PRL. am ----- Forwarded message from physnews(a)aip.org ----- Date: Wed, 12 May 2004 14:50:16 -0400 From: physnews(a)aip.org PHYSICS NEWS UPDATE The American Institute of Physics Bulletin of Physics News Number 685 May 12, 2004 by Phillip F. Schewe, Ben Stein OUR UNIVERSE HAS A TOPOLOGY SCALE OF AT LEAST 24 Gpc, or about 75 billion light years, according to a new analysis of data from the Wilkinson Microwave Anisotropy Probe (WMAP). What does this mean? Well, because of conceivable hall-of-mirrors effects of spacetime, the universe might be finite in size but give us mortals the illusion that it is infinite. For example, the cosmos might be tiled with some repeating shape, around which light rays might wrap themselves over and over ("wrap" in the sense that, as in video games, something might disappear off the left side of the screen and reappear on the right side). A new study by scientists from Princeton, Montana State, and Case Western looks for signs of such "wrapped " light in the form of pairs of circles, in opposite directions in the sky, with similar patterns in the temperature of the cosmic microwave background. If the universe were finite and actually smaller than the distance to the "surface of last scattering" (a distance that essentially constitutes the edge of the "visible universe," and the place in deep space whence comes the cosmic microwaves), then multiple imaging should show up in the microwave background. But no such correspondences appeared in the analysis. The researchers are able to turn the lack of recurring patterns into the form of a lower limit on the scale of cosmic topology, equal to 24 billion parsecs, a factor of 10 larger than previous observational bounds. (Cornish, Spergel, Starkman, Komatsu, Physical Review Letters, upcoming article; contact Neil Cornish, 406-994-7986, cornish(a)physics.montana.edu) [...] ----- End forwarded message -----

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DM from INTEGRAL satellite? - Rencontres Cosmologie-Astroparticule-Gravitation: Integral voit-il la matičre noire ? (fwd)
by boud 10 May '04

10 May '04

Discovery of dark matter by INTEGRAL? > ---------- Forwarded message ---------- > Date: Mon, 10 May 2004 19:10:55 +0200 (MET DST) > From: Luc Blanchet <blanchet at iap.fr> > To: users_all at iap.fr > Subject: [X-UNKNOWN] Rencontres Cosmologie-Astroparticule-Gravitation: > Int[X-UNKNOWN] egral voit-il la matičre noire ? > > > Nous vous annonçons la seconde édition des rencontres d'Ile de France : > Cosmologie-Astroparticule-Gravitation: > http://cdfinfo.in2p3.fr/~bouquet/CAG.html > > ======================================== > le 18 mai 2004 de 14h ŕ 18h > Amphithéâtre de l'Institut d'Astrophysique de Paris > 98bis, Bd Arago - 75014 Paris > ========================================= > > > ============================ > INTEGRAL voit-il la matičre noire ? > ============================ Does INTEGRAL see dark matter? > > Résumé: > ------------ > Les récentes observations menées par le satellite INTEGRAL dans le > domaine des rayons gamma confirment l'émission d'un rayonnement > d'annihilation de paires électrons-positrons extręmement intense dans > les régions centrales de la Galaxie. La résolution angulaire et Recent INTEGRAL observations in gamma show very intense electron-positron pair annihilation radiation in central regions of the Galaxy. > spectrale sans précédent de ce satellite ont permis de caractériser le > milieu dans lequel ont lieu ces annihilations et l'étendue spatiale des INTEGRAL has better angular resolution and spectral resolution than earlier instruments/telescopes. > sources. Outre la trčs grande difficulté d'alimenter le centre > galactique en positrons au taux requis par les observations, les > modčles astrophysiques traditionnels se heurtent au problčme important > de la distribution spatiale des sources de rayonnement, dont INTEGRAL a > démontré qu'elles s'étendaient sur au moins 1 kpc autour du centre The sources are distributed up to at least 1 kpc from the G Centre - which is difficult to explain from traditional astrophysical models. > galactique. Comment produire autant de positrons (10^43 s'annihilent > chaque seconde !) et comment les disperser sur un aussi vaste volume ? How can so many (10^43) positrons annihilate per second? How can they be distributed over such a large volume. > Un scénario faisant intervenir une composante légčre de matičre noire > pourrait apporter une réponse simple et fascinante ŕ ces questions. One scenario is with a "light [non-heavy] component" of dark matter. > Alors, INTEGRAL voit-il la matičre noire du centre galactique? > > La demi-journée se déroulera comme suit : > ---------------------------------------------------------- > 14h00-14h40 : P. Jean (CESR-Toulouse) > Observations de l'émission d'annihilation > e+/e- galactique > 14h45-15h25 : M. Cassé (IAP-Paris, CEA/Sap-Saclay) > L'énigme des positrons du bulbe galactique : > Hypernovae ou matičre noire légčre? > 15h30-16h10 : C. Boehm (Oxford) > Comment tester le scénario de matičre noire légčre ? > 16h35-17h15 : D. Hooper (Oxford) > Evidence for particle dark matter ? > 17h20-18h00 : P. Fayet (ENS/LPT-Paris) > Physique des particules et matičre noire légčre: > une nouvelle interaction ? > > > > En espérant vous voir le 18 mai, > > Le comité d'organisation : L. Blanchet, A. Bouquet , Y. Giraud-Héraud, > B. Guiderdoni, J.-Ch. Hamilton, E. Parizot

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constructive ideas on cosmo/relativistic political problems?
by Boud Roukema 09 Apr '04

09 Apr '04

Dear Martin, Alvaro, Reva, All three of you have made a great effort - and risked being labelled as "troublemakers not interested in science" - by publishing your experiences in present-day astronomy, especially cosmology/relativistic astronomy. You may already know me, or if not, a quick search on astro-ph for "Roukema" will tell you more about my cosmo stuff. Just like you, i also would prefer just to do pure science and not have to worry about all this meta-stuff of how we organise and communicate, and now that i have a faculty position here at the Toruń Centre for Astronomy (TCfA), Nicolas Copernicus University, Poland (observationally we're working on the OCRA project which will hopefully soon be able to do a Sunyaev-Zeldovich survey), i no longer have a Damocles sword hanging over me regarding having to find my next job. :) (But trying to get the younger students up to speed is taking quite a bit of time...) IMHO people like us, who are willing to speak out openly and honestly in the interests of our common sense of scientific ethics, should find ways of coordinating our thoughts and maybe generating suggestions for making things better. At the moment i'm spamming (sorry) our general cosmo-torun mailing list because i don't think this sort of discussion should be secret, but i think that further discussion should go off to a discussion forum which will not bother people on the main list. IMHO, a wiki is one of the best ways of communicating on this sort of stuff - it's more structured than a mailing list - anyone can reorganise the pages and make them clearer - but it's much less formal than posting articles on arxiv.org. Anyway, i've put links to all three of your articles here: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Cosmo/AstroPolitics and it would be great if you could add your comments on the page, reorganise it, (or even rename it if you don't think "AstroPolitics" is the best name for the page), or put in a link to an electronic place where you think these sorts of questions can best be discussed. Hoping to hear from you (maybe on the twiki?), and keep doing good science :) boud

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(1) censorship only for extreme cases; (2) censorship itself uncensorable
by Boud Roukema 08 Apr '04

08 Apr '04

Hi Andrzej Kus, Grzegorz, Bartek, everyone, The purpose of a university is the collection and analysis of empirical information, its analysis and integration into theory, the development of theory, and the learning/teaching process between researchers and students. (1) IMHO, censorship is something that should not be taken lightly, and IMHO the minimum that is reasonable in the internet era is that (2) the ***process of censorship*** itself is public. This is why i would be most comfortable in discussing this on cosmo-torun rather than by private, secret emails. ***Please send any responses to cosmo-torun at astro.uni.torun.pl *** i have violated netiquette in forwarding this private email to the list, but i think this is acceptable since censorship is only something that should done, IMHO, in very extreme circumstances. Censorship was (AFAIK, i didn't live in Poland at the time) very common during the PRL period, and IMHO a university should be one of the places where academic freedom is most vigorously defended. If information on a web page is uninteresting or irrelevant, that is a very poor reason for censoring it. However, a polite request to someone who has published uninteresting or irrelevant information is surely sufficient if someone feels that the information needs to be hidden. Let us respect each other as intelligent adults! On Wed, 7 Apr 2004, Grzegorz Hrynek wrote: > Jako administrator serwisu internetowego Katedry Radioastronomii i z > upowaznienia Kierownika Radioastronomii prof. A. Kusa informuje, ze > odwolanie z glownej witryny serwisu KRa do strony internetowej o adresie > > http://adjani.astro.uni.torun.pl/~blew/ > > zostalo zablokowane. > > Strona o powyzszym adresie zostala stworzona przez Bartosza Lwa. > > Powodem zablokowania strony jest umieszczenie informacji i zasobow > prywatnych nie majacych zadnego zwiazku z dzialalnoscia wykonywana w KRa. KRA is part of UMK. UMK is a university. Knowledge can only very artificially be split between subjects. How can one study astronomy without knowing physics? How can one study physics without understanding mathematics? How can one use efficient learning methods without being aware of the research being done in psychology and pedagogy at the university? We have a research/teaching department in Pedagogy which investigates the efficiency of using the internet for teaching, for creativity in learning - http://www.ped.uni.torun.pl/kognityw/ Would there be a problem in publishing useful pedagogical information on KRA web pages? In any case, there is talk of extending UMK by uniting with an institute in Bydgoszcz - it would be rather inconsistent to claim that we want a bigger university when at the same time we try to discourage "cross-talk" and interdisciplinary discussion. As for the expression "informacji i zasobow prywatnych", those pages (which Bartek has chosen voluntarily to hide) concerned anecdotal documentation of ethnological information. Since he chose to publish them, they are no longer private information - the term "private information" refers to things like someone's private address, telephone number, bank account number, etc. In the case of publication of that sort of private information, a request to censor the information would be much more reasonable. We have a department of Ethnology: http://www.his.uni.torun.pl/wydzial/program/etnologia/progetno.shtml The fact that Bartek is a doctoral student in KRA rather than ethnology is, IMHO, not a good reason to ask him to hide the pages. A more valid point would be that the pages are only anecdotal rather than systematic. They do not claim (AFAIR) to constitute a systematic study of any given social group, and so are probably not terribly useful for quality ethnological research. However, whether this justifies requesting Bartek to hide the pages is not obvious to me. A more constructive suggestion would have been to propose to Bartek that he contact the Ethnology department (URL above) and find out if his documentation can be useful to them. The argument of wasted resources is a different argument: the amount of disk space and bandwidth used for the (now hidden) pages would IMHO be negligible compared to what we do which is directly cosmo related. On the contrary, sharing resources with resource-poor departments like Ethnology makes sense - we're here to work together, not compete with one another. (OK, OK, i know that among us we have divergent points of view on the validity of competition in an E=mc^2 society living on a planet with a climate system going into a non-linear warming phase.) > Zobowiazuje Bartosza Lwa do jak najszybszego usuniecia informacji prywatnych > z komputera adjani.astro.uni.torun.pl Well, they are not private information, IMHO, but in any case, Bartek seems to have chosen to hide them. > Informuje ponadto, ze do prezentacji wlasnych prywatnych materialow i > przekonan sluza serwisy platne swiadczace tego typu uslugi. There is no need to use commercial web servers, i don't think we should be encouraging people to commercialise information. We are a university, not a hypermarket. There are zero-cost servers like: http://geocities.yahoo.com/ http://geocities.yahoo.com/ps/learn2/HowItWorks4_Free.html and probably on http://www.wp.pl, http://www.onet.pl etc it is possible to host quite a few images at no cost (apart from having to accept advertising). > Ponadto zwracam sie z prosba do administratora komputera > adjani.astro.uni.torun.pl - Bouda Roukema - o nadzor nad ta sprawa i jak > najszybsze wyjasnienie zaistnialego problem z uzytkownikiem Bartoszem Lwem. Well, i don't understand the urgency - in any case Bartek is a good cosmologist and an intelligent adult and as i understand it, he decided that fighting censorship in this case is probably not worth it. That's his decision. The important thing is that rumours do not start going around of students' web pages being arbitrarily censored. Hopefully in this case it is clear that a polite request has been made, and that any such requests can be publicly discussed and we can trust each other to make reasonable decisions based on constructive discussion - even if having highly diverging viewpoints. Please remember that creativity is an important part of the learning process. Creativity is not just poetry: it is something that can be measured (to some extent, e.g. see the recent PhD thesis (March 2004) by D. Siemieniecka-Gogolin consisting of empirical measurements of "creative attitudes" and "creative abilities" among Polish school teachers regarding the use of computers and the internet in teaching, in the Pedagogy Department of the University of Nicolas Copernicus (URL above, no direct link to thesis, sorry)). If a bunch of web pages showing a few photographs of personal travels stimulates the creativity of a doctoral student doing excellent work in trying to make a step forward in the problem of dark matter, i really do not understand the problem. The bubble chamber for detecting high energy particles is said to have been inspired by physicists driking beer and looking at the bubbles. Killing off creativity is appropriate for an army, not for a university. Creativity is certainly *not sufficient* for good science, but most scientists would agree that it is *necessary* for good science. KRA is part of a university, just as that same university exists as part of euro-asian-african-american-australasian civilisation, which exists on the planet Earth over a time interval of a few kyears and into an unknown, possibly very short time interval in the future (relative to our local space-time position), which formed about 4.6 Myears ago around the Sun which formed in a molecular cloud according to a process of star formation which is still poorly understood, in a galaxy which formed inside of a dark matter halo which virialised from a primordial density perturbation in a perturbed Friedmann-Lemaitre-Robertson-Walker Universe. Let's not forget the context. We are a university, not an army. pozdr boud

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Re: (1) pgplot licence vs other; (2) NR (fwd)
by Boud Roukema 31 Mar '04

31 Mar '04

witam, Michał wrote: > Boud Roukema wrote: > > >>what is the purpose of GPL? creating better, community driven software. > >>imho it is more than a license, it is a philosophy. your "software" just > > > > > > It is not philosophy. It is politics, because it relates to the power that > > some people have over other people, and the power that people do *not* > > have over other people. > > > > The intention is to minimise the power that people have over others to > > the minimum necessary - in the context of computer code. > > > > It depends what you mean by "politics" and "philosophy" I believe. in > fact it is both. but developers seem to prefer the term "philosophy" > since it is more positive in meaning. i guess this may be an anglophone/francophone difference. Personally i prefer precision rather than political correctness. > >> do not fit GPL. it is a set of mathematical operations. > >>how the hell do you want people to use it/trace bugs/improve when you > >>only provide hardly readable code?????? > >> > >>we could argue about the quality of the code but I do not think will do > >>any good. > > > > > > The point is not to argue about the quality of the code. > > > > The whole point of the GNU GPL is that concrete discussion of the > > code can happen according to rules which encourage improvement of the code. > > > > Without distribution under GNU GPL, it is difficult to get the *feedback* > > that someone has the opinion that the code is "hardly readable". > > > > I agree. :) > but without providing high-quality code and docs it is hard to > get useful feedback. It's sufficient to improve by the same fraction. Consider a code of low initial quality p(0) = 0.3 with low docs quality q(0)=0.3, versus code with high initial quality p'(0)= 1.0 and high initial docs quality q'(0) = 1.0. In the first case there is on average one iteration of feedback each week which yields moderate improvement in the combined quality x = pq of 10% (alpha = 1.1), in the second case the initial version is only distributed after one year, and then gets feedback yielding improvements of 10%. p(0)=q(0)=0.3 p'(0)=q'(0)=1.0 x(t) = p(0)q(0) alpha^n (n= weeks) x'(t) = p'(0)q'(0) alpha^(max(0,n-52)) which gives for t \ge 52: x(t)= 12.8 alpha^(n-52) x'(t)= 1.0 alpha^(n-52) Conclusion: many iterations through a positive feedback loop starting from an imperfect beginning can give a better result than waiting a long time for a "perfect" beginning to be ready. > > On the other hand, if there is a delay of between several days and > > a few weeks for having the right to use the code, and then a further > > delay of unknown length to redistribute modified versions, the cooperation > > between X, Z, W and U is unlikely to happen, especially given that Y > > feels unhappy with the code and may influence the delays. > > > I can bet that Kriss would be more that happy to accept any help with > porting his software to other languages. Have you tried to chat with him > about licence issues? If you wished to be a neutral, third party moderator to discuss with a certain person regarding certain software, for a publicly archived discussion (like this one) regarding porting of cosmologically useful software to a version distributed under the GNU GPL or a compatible licence, and if you convinced that person and other people interested that you would be a good moderator (meaning that you clarify the discussion, stop different people from flaming or threatening each other, ask them to apologise or find other ways of getting people to cool off if they start flaming, etc.), i would be happily accept this. My prediction is that this would be not be accepted by some of the people, but i would be glad to be wrong. > As I still am quite sure about there is no licence that suits scientific > software and gpl is not the best. that is why some people refuse > gpl-ing. I myself would be very happy having a nicer licence for sci soft. Personally i'm not convinced of the need. I'm aware that if you spend a lot of time on software and don't write many publications, you need to get credit for the software. The GNU GPL already guarantees that the original author's name remains, and IMHO the cosmo community is small enough that people writing, or more importantly, maintaining good software do get credit. Just because it's not formally part of these strange formulas attempting to measure scientific productivity in PL, does not mean the credit is not there. However, you want a modified licence, so please have a look at: http://www.gnu.org/licenses/gpl-faq.html#ModifyGPL What do think of a licence which is identical to the GNU GPL, but we remove the preamble (unless FSF agrees that we may include it in our modified version after discussion), we modify the end-wording, and we add a term/condition like: SSL-13.0 - proposal for Scientific Software Licence-term/condition 13.0 ---------------------------------------------------------------------- 13. Any publication in a recognised scientific journal which makes use of this software must contain the acknowledgment: "Use has been made of PROGRAM-NAME which can be obtained at PROGRAM-URI", where PROGRAM-NAME is the name of the Program and PROGRAM-URI is a Universal Resource Identity showing where the full machine-readable source code of the Program can be downloaded from." ---------------------------------------------------------------------- and then write to licensing at gnu.org to ask for advice. My guess is they would only complain about the compatibility question: http://www.gnu.org/licenses/gpl-faq.html#WhatIsCompatible In which case i would suggest in addition: SSL-2.1 - proposal for Scientific Software Licence-term/condition 2.1 ---------------------------------------------------------------------- identical with GNU GPL v2 term/condition 2. except for the following: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "But when ... wrote it. " %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% becomes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of either this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it, or of the GNU General Public License, as published by the Free Software Foundation (either version 2 of the License, or (at your option) any later version) whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. If you apply the GNU General Public License rather than this License to the whole, then you are requested (but not required) to include a file called README.acknowledgments in the machine-readable source code which includes the text of term/condition 13. below, with the phrase "Any publication ... acknowledgment:" replaced by "It is kindly requested (but not legally required) that any publication in a recognised scientific journal which makes use of this software should contain the acknowledgment:" %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ---------------------------------------------------------------------- In short, this means that if an SSL protected package is combined with a non-GNU GPL package, then: - if the other package is also under SSL, the new one can also be SSL - if the other package is GNU GPL, then the new one *must* be GNU GPL (condition 2 of GNU GPL), but the user is *requested* to add a file converting term/condition 13 into a README.acknowledgments file which *requests* the user to write an acknowledgment - if the other package is under some other licence, it may or may not be possible to distribute the combined package, it depends on that other licence. IMHO, this is as strong as we could get while retaining GNU GPL compatibility. If we try to make the request into a requirement, then my worry is it would be GPL incompatible. In fact, compatibility is one of the big issues of the GNU GPL. It enables modules to be combined together in ways far beyond what the original authors ever could do alone. Remember: there are 6 billion of us. That's a lot. Anway, you wanted a licence: what do you think of this one? If we go through a few iterations, with a bit of feedback :), then i'd be happy to write to licensing at gnu.org, point them to our discussion, and see what they think. A simpler alternative to SSL-13.0 + SSL-2.1 would be: SSL-13.1 - proposal for Scientific Software Licence-term/condition 13.1 ---------------------------------------------------------------------- 13. It is kindly requested (but not legally required) that any publication in a recognised scientific journal which makes use of this software should contain the acknowledgment: "Use has been made of PROGRAM-NAME which can be obtained at PROGRAM-URI", where PROGRAM-NAME is the name of the Program and PROGRAM-URI is a Universal Resource Identity showing where the full machine-readable source code of the Program can be downloaded from." If you distribute this Program as part of a whole which is a work based on the Program, and you apply the GNU General Public License (GNU GPL) to that whole, then you are kindly requested to copy this term/condition 13. to a file called README.acknowledgments (if it is not already present) and include it in the machine-readable source code. Since further distribution of the whole would occur under the GNU GPL, there would be no further obligation to include the file, only a kind request. ---------------------------------------------------------------------- pozdr boud

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2 topo articles on astro-ph in 1 day!
by Boud Roukema 30 Mar '04

30 Mar '04

Hyperbolic Universes with a Horned Topology and the CMB Anisotropy Authors: Ralf Aurich, Sven Lustig, Frank Steiner, Holger Then http://arxiv.org/abs/astro-ph/0403597 A Note on the Robustness of Pair Separations Methods in Cosmic Topology Authors: A. Bernui, G.I. Gomero, B. Mota, M.J. Reboucas http://arxiv.org/abs/astro-ph/0403586 The Foot et al papers on mirror matter as a dark matter candidate are also starting to sound convincing (at least from the abstracts). Now it sounds like they get a good match for explaining the relative values of Omega_b and Omega_m which implies a 1ev energy scale and hints at a connection with neutrino oscillations: http://de.arxiv.org/abs/astro-ph/0402267 Any comments, Bartek? pozd boud

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atto-cosmology: NOAA terrestrian warming goes non-linear?
by Boud Roukema 30 Mar '04

30 Mar '04

atto-cosmology (see http://en.wikipedia.org/wiki/SI_prefix for "atto") NOAA (National Oceanic and Atmospheric Administration, USA): http://news.independent.co.uk/world/environment/story.jsp?story=505798 > Global warming spirals upwards > By Geoffrey Lean, Environment Editor > > 28 March 2004 > > Levels of carbon dioxide in the atmosphere have jumped abruptly, > raising fears that global warming may be accelerating out of control. > > Measurements by US government scientists show that concentrations of > the gas, the main cause of the climate exchange, rose by a record > amount over the past 12 months. It is the third successive year in > which they have increased sharply, marking an unprecedented triennial > surge. > > Scientists are at a loss to explain why the rapid rise has taken > place, but fear that it could show the first signs that global warming > is feeding on itself, with rising temperatures causing increases in > carbon dioxide, which then go on to drive the thermometer even > higher. That would be a deeply alarming development, suggesting that > this self-reinforcing heating could spiral upwards beyond the reach of > any attempts to combat it. In other words, we may have reached d(\Delta T)/dt \propto (\Delta T) in which case \Delta T \propto \exp(t) . Of course, negative feedbacks will have to happen sooner or later, but the stable point in N-parameter space could be quite different from the stable point where we have been during the previous 2000 years... ... > The carbon dioxide measurements have been taken from the 11,400ft > summit of Hawaii's Mauna Loa, whose enormous dome makes it the most > substantial mountain on earth, by scientists working for the US > government's National Oceanic and Atmospheric Administration. ... > The latest measurements, taken a week ago, showed that carbon dioxide > had reached about 379 parts per million (ppm), up from about 376ppm > the year before, from 373ppm in 2002 and about 371ppm in 2001. These > represent three of the four biggest increases on record (the other was > in 1998), creating an unprecedented sequence. They add up to a 64 per > cent rise over the average rate of growth over the past decade, of > 1.8ppm a year. > > The US scientists have yet to analyse the figures and stress that they > could be just a remarkable blip. Professor Ralph Keeling - whose > father Charles Keeling first set up the measurements from Mauna Loa - > said:"We are moving into a warmer world". i highly recommend the wikipedia article: http://en.wikipedia.org/wiki/Global_warming For people sceptical about the sources of the data (as we all should be), at the bottom of the page there are external web links classified by the biases of the different organisations: "Scientific" (NASA + NOAA) "United Nations" "Environmentalist" "Conservative-affiliated" "Industry-sponsored" "Independent (or receives too little support to constitute "sponsorship")" "Other" Environmental scientists don't seem to publish on http://arxiv.org or the equivalent, unfortunately. pozdr boud

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astro-ph/0403111
by Andrzej Marecki 25 Mar '04

25 Mar '04

astro-ph/0403111 Date (v1): Thu, 4 Mar 2004 03:41:19 GMT (12kb) Date (revised v2): Fri, 12 Mar 2004 04:15:48 GMT (12kb) Date (revised v3): Mon, 22 Mar 2004 02:04:28 GMT (12kb) Date (revised v4): Wed, 24 Mar 2004 04:03:35 GMT (0kb,I) Problems with studying topology of the universe via circles from cosmic microwave background data. Authors: Evelise Gausmann, Reuven Opher Comments: This paper has been withdrawn -- Andrzej

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fealpix vs healpix - it stinks for me
by Michal Frackowiak 24 Mar '04

24 Mar '04

hi there! I have just downloaded the version of fealpix. here are my thoughts after a few minutes of browsing the sources and an attempt to compile things: - Boud: you claim the software to be GPL and attach the license. but the software itself is not in the spirit of GNU at all!!! the idea of gnu software is not: look at me, I can handle dozens of lines of code and several equations without a single line of comment! and that is the software you have created - extremelly unclearly coded, uderstanding hardly possible. with such attitude you simply discourage others to use/learn/modify the code. and that is not gnu. you should not release the code in that form and imho it is against gnu philosophy. - the code is not even comparable to HEALpix in both functionality and documentation - chosing "fealpix" as a name is not fortunate. it seems as a "negative campaign". - no docs, no examples, no comments - could you start using gnu autoconf? - I find "astropolitics" stuff inlcuded somehow improper. you permanently call HEALpix non-free and claim its authors to blindly follow rules of feudal reality. - I am very not sure about NR stuff you use and claim that simple rewrite of routines code makes it free. I have compared just one of the files with what can be found in NumericalRecipies and it is IDENTICAL (apart from changing the variables' names and some minor rearragement). you not simply use provided algorithms, you use provided code which is distributed under somehow more restricted license. that is not the way it should be. if all the gnu community acted like that the gnu software would be a patchwork from stolen code. fortunately others are more creative and write original software. you should not distribute those routines in the present form - the code is not yours. I see all this felapix was intended as a battle for "free software". but the way you fight turns against gnu in fact - by offending people, being extreme radicalist, mixing code and politics, writing unreadable code, stealing code and claiming yours. you should change the way you fight for "free software" because it does not do any good. do the Octave people constantly cry about Matlab beeing non-free???????? or Kaffe and Java?????????? or gcc and icc???? gjc and Java again???????? GNU is about creating BETTER software, not accusing proprietary software of being non-free. that is my oppinion. at this very moment I feel disappointed with what you do with GNU and GPL philosophy. regards - michal BTW: for NR, this is the license you are obliged to follow: If you are the individual owner of a copy of this book and you type one or more of its routines into your computer, we authorize you to use them on that computer for your own personal and noncommercial purposes. You are not authorized to transfer or distribute machine-readable copies to any other person, or to use the routines on more than one machine, or to distribute executable programs containing our routines. This is the only free license.

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