Heating the bubbly gas of galaxy clusters with weak shocks and sound waves

Details Heating the bubbly gas of galaxy clusters with weak shocks and sound waves Heating the bubbly gas of galaxy clusters with weak shocks and sound waves

2005-07-01

arxiv.org/abs/astro-ph/0507038v2

Astrophys.J.634:L141-L144,2005

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ Letters after minor wording changes, 4 figures, 4 pages

Scientific paper

10.1086/498301

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 to 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-)kpc scale filaments and bubbles of relativistic plasma.

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