BTW, this stuff is highly important for OCRA analyses - whichever way it works out. We'll (hopefully) have lots of clusters and maybe we'll use cosmology to understand cluster physics rather than the other way around, but either way, getting all the bits of the puzzle to be consistent is the challenge.
BTW(2) - Motyl proposes that we work on the grant proposal tomorrow afternoon (Wed 17 Dec) @radio astronomy.
pozd boud
On Tue, 16 Dec 2003, Boud Roukema wrote:
Niayesh Afshordi, Renyue Cen http://arxiv.org/abs/astro-ph/0105020
then the (1+z) factor becomes essentially (1+ not much) over the relevant redshift range.
In other words, Blanchard et al's figures, with Afshordi & Cen's version of the T-M relation, give the concordance model.
Again in simpler words, Blanchard et al think that clusters form in one way, Afshordi & Cen think they form in a somewhat different way, leading to moderately different T-M relations and hence totally different local curvature parameter inferences.