A double radio halo in the close pair of galaxy clusters Abell 399 and Abell 401

Author： Murgia M.   Govoni F.   Feretti L.   Giovannini G.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|509|issue|A86-A86

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.509, Iss.issue, 2010-01, pp. : A86-A86

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Abstract

Aims. Radio halos are faint radio sources usually located at the center of merging clusters of galaxies. These diffuse radio sources are rare, having so far been found only in about 30 clusters of galaxies, suggesting that particular conditions are needed to form and maintain them. It is interesting to investigate the presence of radio halos in close pairs of interacting clusters in order to possibly clarify their origin in relation to the evolutionary state of the merger. In this work, we study the case of the close pair of galaxy clusters A399 and A401.

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