Other
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.2501m&link_type=abstract
American Astronomical Society, HEAD meeting #10, #25.01
Other
Scientific paper
The gaseous atmospheres of galaxies and clusters serve as gauges of the energy output from AGN over cosmic time. The mechanical energy streaming from the nuclei of central cluster galaxies--even those with relatively feeble radio sources--often rivals the power output from quasars. AGN supply enough energy to suppress cooling of the dense, X-ray cusps in clusters and galaxies, and thus to regulate the rate of black hole growth and star formation. How this and other heating mechanisms, such as conduction, cosmic rays, and star-burst winds, couple to and heat X-ray atmospheres are poorly understood. I will discuss how modern X-ray observations have changed our understanding of galaxy formation and extragalactic radio sources.
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