Computer Science – Sound
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21510901c&link_type=abstract
American Astronomical Society, AAS Meeting #215, #109.01; Bulletin of the American Astronomical Society, Vol. 42, p.453
Computer Science
Sound
Scientific paper
During the past decade, the central regions of galaxy clusters have been recognized as the sites of a remarkable symbiosis of supermassive black holes and cooling X-ray gas. The vast amounts of energy lost by the hot gas through X-ray radiation appear to be balanced by feedback from supermassive black holes, which adjust their power to maintain the system in a quasi-steady state. We see clear signs of this process in X-ray and radio images in the form of bubbles, shocks and sound waves. We can crudely characterize the energetics, but we are missing many important details. The interest in cluster cores is also amplified by the realization that the same feedback scenario might be a key ingredient in galaxy formation. If true, then the central regions of large and bright nearby clusters offer us a close up view of those processes at high redshifts which govern the development of the present day galaxy population.
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