## Abstract New VLA observations at 90 cm are presented for the clusters of galaxies Abell 2219 and Abell 2744, which are characterized by the presence of a radio halo and relic. These sources are suggested to originate from particles reaccelerated in the cluster central regions, possibly by turbul
New radio halos and relics in clusters of galaxies
β Scribed by G. Giovannini; L. Feretti; F. Govoni; M. Murgia; R. Pizzo
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 818 KB
- Volume
- 327
- Category
- Article
- ISSN
- 0004-6337
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β¦ Synopsis
Abstract
We present here new images of relics and halo sources in rich cluster of galaxies and the correlation between the halo radio surface brightness versus the cluster bolometric Xβray luminosity. (Β© 2006 WILEYβVCH Verlag GmbH & Co. KGaA, Weinheim)
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We aim to obtain a consistent description of non-thermal emissions from Abell 2256 and to give a prediction for a gammaray emission from this galaxy cluster. Assuming that a radio relic illuminates a localization of an ongoing merger, and that both radio and non-thermal part of hard X-ray emission a
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