The Role of Shock Heating in AGN Feedback

Details The Role of Shock Heating in AGN Feedback The Role of Shock Heating in AGN Feedback

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...43r&link_type=abstract

"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by

Physics

Scientific paper

Feedback between the ICM and the central AGN is the most likely solution to the so-called ``cooling flow problem" in galaxy clusters. Although the internal energies of ICM cavities inflated by AGN jets are generally large enough to offset cooling in the gas, it is not clear how and where this energy is released to heat the ICM. AGN outburst shocks, which are driven by the rapid inflation of the X-ray cavities, heat the ICM isotropically and close to the central AGN, as required for AGN feedback to operate. I will discuss the role of outburst shocks in AGN feedback, focusing on multiwavelength observations of the galaxy group NGC 5813 as an example, including initial results from a deep (650 ks) Chandra observation, the longest Chandra imaging observation of a galaxy group core to date.

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