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AGN Feedback in Clusters and Galaxies
	
 Mar 5, 2008 
 3:20PM to 4:20PM





	





























Date/Time

Date(s) - 05/03/2008
3:20 pm - 4:20 pm





Title: AGN Feedback in Clusters and Galaxies


Speaker: Dr. Brian McNamara


Institute: University of Waterloo


Location: ABB 102


Description:


The gaseous atmospheres of galaxies and clusters serve as repositories for the energy output from AGN over cosmic time. X-ray observations have shown that cooling of the dense, keV gas in the cores of galaxies and clusters is strongly suppressed, and feedback from supermassive black holes is a likely heating agent. The energy pouring out of the nuclei of central cluster galaxies often rivals that of quasars. Unlike quasars, their vast power output is channeled into mechanical energy rather than light.