Radio and X-ray detectability of buoyant radio plasma bubbles in clusters of galaxies

被引：40

作者：

Ensslin, TA ^{[1
]}

Heinz, S ^{[1
]}

机构：

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

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 384卷 / 03期

关键词：

radiation mechanisms : thermal; radiation mechanism : non-thermal; galaxies : active; intergalactic medium; galaxies : cluster : general; radio continuum : general;

D O I：

10.1051/0004-6361:20020207

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Chandra X-ray Observatory is finding a surprisingly large number of cavities in the X-ray emitting intracluster medium (ICM), produced by the release of radio plasma from active galactic nuclei. In this letter, we present simple analytic formulae for the evolution of the X-ray deficit and for the radio spectrum of a buoyantly rising bubble. The aim of this work is to provide a theoretical framework for the planning and the analysis of X-ray and radio observations of galaxy clusters. We show that the cluster volume tested for the presence of cavities by X-ray observations is a strongly rising function of the sensitivity.

引用

页码：L27 / L30

页数：4

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