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Picture of the MonthAugust 2005
An INTEGRAL IBIS observation of the Coma ClusterThis image shows a 500 ks IBIS observation of the Coma Cluster region in the 20 to 50 keV range. In addition to the Coma Cluster itself the image shows 12 serendipitous sources with more than 4 sigma significance. The faintest sources in this image are about 1 mCrab. A large fraction of the identified sources are low redshift (z < 0.02) AGN's, mostly of Seyfert I type. The source in the image directly account for about 3% of the cosmic X-ray background in the 20-50 keV band. The results derived from this observation have been described in Krivonos et al., ApJ 2005, 625, 89. Credits: Krivonos et al. (IKI, Moscow)
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