Feedback in AGN heating of galaxy clusters

Details Feedback in AGN heating of galaxy clusters Feedback in AGN heating of galaxy clusters

2004-05-21

arxiv.org/abs/astro-ph/0405434v1

Astrophys.J. 617 (2004) 896-902

Astronomy and Astrophysics

Astrophysics

12 pages, 6 figures, submitted to ApJ

Scientific paper

10.1086/425411

One of the challenges that models of AGN heating of the intracluster medium (ICM) face, is the question how the mechanical luminosity of the AGN is tuned to the radiative losses of the ICM. Here we implement a simple 1D model of a feedback mechanism that links the luminosity of the AGN to the accretion rate. We demonstrate how this simple feedback mechanism leads to a quasi-steady state for a broad range of parameters. Moreover, within this feedback model, we investigate the effect of thermal conduction and find that its relative importance depends strongly on the cluster mass.

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