Heating the Bubbly Gas of Galaxy Clusters with Weak Shocks and Sound Waves

Type Journal Article
Names S. Heinz, E. Churazov
Publication The Astrophysical Journal Letters
Volume 634
Issue 2
Pages L141-L144
Date December 1, 2005
URL http://adsabs.harvard.edu/abs/2005ApJ...634L.141H
Library Catalog NASA ADS
Abstract Using hydrodynamic simulations and a technique to extract the rotational component of the velocity field, we show how bubbles of relativistic gas inflated by AGN jets in galaxy clusters act as a catalyst, transforming the energy carried by sound and shock waves into heat. The energy is stored in a vortex field around the bubbles, which can subsequently be dissipated. The efficiency of this process is set mainly by the fraction of the cluster volume filled by (sub-) kiloparsec-scale filaments and bubbles of relativistic plasma.
Tags GALAXIES: CLUSTERS: GENERAL, ISM: bubbles, Instabilities, Methods: Numerical, hydrodynamics, shock waves
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