Feedback in AGN heating of galaxy clusters

Abstract

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.

12 pages, 6 figures, submitted to ApJ

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Cited by in corpus (25)

• Intracluster Medium Entropy Profiles for a Chandra Archival Sample of Galaxy Clusters
• X-ray Spectroscopy of Cooling Clusters
• On the prevalence of radio-loud AGN in brightest cluster galaxies: implications for AGN heating of cooling flows
• On the Nature of Feedback Heating in Cooling Flow Clusters
• Hydrodynamical simulations of cluster formation with central AGN heating
• A thermally stable heating mechanism for the intracluster medium: turbulence, magnetic fields and plasma instabilities
• Towards a Holistic View of the Heating and Cooling of the Intracluster Medium
• Magnetic turbulence in cool cores of galaxy clusters
• Physical viscosity in smoothed particle hydrodynamics simulations of galaxy clusters
• The unusual X-ray morphology of NGC4636 revealed by deep Chandra observations: cavities and shocks created by past AGN outbursts
• A Global Stability Analysis of Clusters of Galaxies with Conduction and AGN Feedback Heating
• The bolometric output and host-galaxy properties of obscured AGN in the XMM-COSMOS survey
• Self-Regulated AGN Heating in Elliptical Galaxies
• The interplay between radio galaxies and cluster environment
• AGN-driven convection in galaxy-cluster plasmas
• Systematic study of X-ray Cavities in the brightest galaxy of the Draco Constellation NGC 6338
• X-ray line tomography of AGN-induced motion in clusters of galaxies
• Convection and AGN Feedback in Clusters of Galaxies
• Star Formation, Radio Sources, Cooling X-ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096
• The Source of Mass Accreted by the Central Black Hole in Cooling Flow Clusters
• Observable consequences of kinetic and thermal AGN feedback in elliptical galaxies and galaxy clusters
• Abundance profiles in cooling-core clusters: a fossil record of past AGN-driven convection?
• Rapidly varying accretion and AGN feedback
• Parker/buoyancy instabilities with anisotropic thermal conduction, cosmic rays, and arbitrary magnetic field strength
• The unusual X-ray morphology of NGC4636 revealed by deep Chandra observations: cavities and shocks created by past AGN outbursts