Feedback in Active Galactic Nucleus Heating of Galaxy Clusters

2004/05/21 by M. Hoeft, M. Brüggen, M. Brueggen · 3 citations
Medicine · Physics and Astronomy · #Accretion (finance) #Active galactic nucleus #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Cluster (spacecraft) #Computer science #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Intracluster medium #Luminosity #Medicine #Nucleus #Optics #Physics #Radiative transfer #Stellar, planetary, and galactic studies #Thermal conduction #astro-ph

paper · pdf · doi:10.1086/425411

published as Astrophys.J. 617 (2004) 896-902 · 12 pages, 6 figures, submitted to ApJ

arxiv created 2004/05/21 · openalex publication_date 2004/12/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

One of the challenges that models of active galactic nucleus (AGN) heating of the intracluster medium (ICM) face is to explain how the mechanical luminosity of the AGN is tuned to the radiative losses of the ICM. Here we implement a simple one-dimensional 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.

Citations

• The Evolution of X‐Ray Clusters in a Low‐Density Universe
• Feedback Heating in Cluster and Galactic Cooling Flows
• A deep Chandra observation of the Perseus cluster: shocks and ripples
• Thermal conduction in cosmological SPH simulations
• The Birmingham--CfA cluster scaling project -- I.Gas fraction and the M--TX relation
• On conduction, cooling flows and galaxy formation
• Discovery of Ghost Cavities in the X-Ray Atmosphere of Abell 2597
• Chandra observations of the galaxy cluster Abell 1835

Cited by

• AGN‐driven Convection in Galaxy‐Cluster Plasmas
• On the prevalence of radio-loud active galactic nuclei in brightest cluster galaxies: implications for AGN heating of cooling flows
• The Unusual X-ray Morphology of NGC 4636 Revealed by Deep Chandra Observations: Cavities and Shocks Created by Past AGN Outbursts
• Observable consequences of kinetic and thermal AGN feedback in elliptical galaxies and galaxy clusters