AGN Feedback is Mechanical? Evidence for Massive Outflows in Hydra A

Details AGN Feedback is Mechanical? Evidence for Massive Outflows in Hydra A AGN Feedback is Mechanical? Evidence for Massive Outflows in Hydra A

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...17g&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

Computer Science

Scientific paper

Our detailed Chandra study of the Hydra A cluster indicates the presence of multiphase gas along soft filaments. We estimate that 10^{11}M_{&sun;} of low-entropy material has been dredged up by the rising lobes from the central 30 kpc to the observed current position of ˜100 kpc. The outflow amounts to a few hundreds M_{&sun;}/yr, which is comparable to the inflow rate of the cooling flow. The energy required to lift the cool gas is ˜2×10^{60} erg, which is comparable to the work required to inflate the cavities and is ˜25% of the total energy of the large-scale shock. Uplift provides a significant channel for the dissipation of outburst energy. The AGN feedback in Hydra A is acting not only by directly heating the gas, but also by removing a substantial amount of potential fuel for the SMBH.

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