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

被引：31

作者：

Heinz, S

Churazov, E

机构：

[1] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[2] Max Planck Inst Astrophys, D-85741 Garching, Germany

[3] Inst Kosmicheskik Issledovaniy, Moscow 117997, Russia

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 634卷 / 02期

关键词：

galaxies : clusters : general; hydrodynamics; instabilities; ISM : bubbles methods : numerical; shock waves;

D O I：

10.1086/498301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：L141 / L144

页数：4

共 33 条

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