Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-12-20
Astronomy and Astrophysics
Astrophysics
12 pages, 10 figures. Accepted by A&A
Scientific paper
10.1051/0004-6361:20078986
Aims. The statistical properties of radio halos can be used to discriminate among the possible models for their origin. Therefore an unbiased and exhaustive investigation in this direction is crucial. Methods. With this goal in mind in this paper we revise the occurrence of radio halos in the redshift range 0-0.4, combining the low redshift (z<0.2) statistical study of XBACs clusters with the NVSS (by Giovannini et al. 1999) with our recent results from the radio follow up of REFLEX and eBCS clusters, the GMRT radio halo survey, at higher redshift (0.2
Bardelli Sandro
Brunetti Gf.
Cassano Rossella
Dallacasa Daniele
Giacintucci Simona
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