Radio and X-Ray Detectability of Buoyant Radio Plasma Bubbles in Clusters of Galaxies

Details Radio and X-Ray Detectability of Buoyant Radio Plasma Bubbles in Clusters of Galaxies Radio and X-Ray Detectability of Buoyant Radio Plasma Bubbles in Clusters of Galaxies

2002-02-05

arxiv.org/abs/astro-ph/0202101v1

Astron.Astrophys. 384 (2002) L27-L30

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, accepted by Astronomya & Astrophysics Letters

Scientific paper

10.1051/0004-6361:20020207

The Chandra X-ray Observatory is finding a surprisingly large number of cavities in the X-ray emitting intracluster medium, 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.

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