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