Scientific Colloquium
3:30 p.m.,  October 27, 2011 - PLEASE NOTE SPECIAL DATE

THE JOHN BAHCALL LECTURE



RASHID SUNYAEV
DIRECTOR, MAX PLANCK INSTITUTE FOR ASTROPHYSICS

Sunyaev
"Hot Gas in Galaxy Clusters, the Cosmic Microwave Background, and Cosmology"

In 1970 relic radiation from the Big Bang was predicted to interact with intergalactic matter in clusters of galaxies in a manner in which both primordial density fluctuations and the cluster IGM could be characterized. This interaction has now been observed in numerous galaxy clusters.  A great deal of new data on the S-Z effect is now coming in from the South Pole Telescope, the Atacama Cosmology Telescope, the Planck spacecraft, and X-Ray space observatories that are revealing new information about the IGM and cosmology. 



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