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Diffuse radio emission from the intracluster medium

✍ Scribed by L. Feretti; C. Burigana; T.A. Enßlin

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
816 KB
Volume
48
Category
Article
ISSN
1387-6473

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✦ Synopsis

An important aspect of the radio emission from galaxy clusters is represented by the diffuse radio sources associated with the intracluster medium: radio halos, relics and mini-halos. The radio halos and relics are indicators of cluster mergers, whereas mini-halos are detected at the center of cooling core clusters. SKA will dramatically improve the knowledge of these sources, thanks to the detection of new objects, and to detailed studies of their spectra and polarized emission. SKA will also provide the opportunity to investigate the presence of halos produced by radiation scattered by a powerful radio galaxy at the cluster centers.

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## Abstract The energy available from active galactic nuclei and their accompanying radio sources in clusters of galaxies have been suggested as energy sources that can solve the “cooling flow problem” in rich clusters of galaxies. In particular, fragmentation and subsequent mixing of buoyant radio