A Powerful AGN Outburst in RBS 797
K. W. Cavagnolo (Obs. C\^ote d'Azur), B. R. McNamara (U. Waterloo), M., W. Wise (U. Amsterdam), P. E. J. Nulsen (CfA), M. Br\"uggen (Jacobs U.), M., Gitti (INAF-Bologna), and D. A. Rafferty (Leiden U.)

TL;DR
This study analyzes deep Chandra X-ray data of galaxy cluster RBS 797, revealing powerful AGN outbursts, complex cavity structures, and potential jet-driven shocks, providing insights into AGN feedback mechanisms in clusters.
Contribution
The paper reports the discovery of additional cavities and estimates the energy and power of the AGN outburst, highlighting it as one of the most powerful known in a cluster and discussing accretion processes.
Findings
Revealed new cavity structures associated with the AGN.
Estimated AGN outburst energy of 3-6 x 10^{60} erg.
Suggested cavities may drive weak shocks into the ICM.
Abstract
Utilizing ks of Chandra X-ray Observatory imaging, we present an analysis of the intracluster medium (ICM) and cavity system in the galaxy cluster RBS 797. In addition to the two previously known cavities in the cluster core, the new and deeper X-ray image has revealed additional structure associated with the active galactic nucleus (AGN). The surface brightness decrements of the two cavities are unusually large, and are consistent with elongated cavities lying close to our line-of-sight. We estimate a total AGN outburst energy and mean jet power of erg and erg s, respectively, depending on the assumed geometrical configuration of the cavities. Thus, RBS 797 is apparently among the the most powerful AGN outbursts known in a cluster. The average mass accretion rate needed to power the AGN by accretion alone is…
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