Fig. 2.
X-CLASS survey covering a total area of 269.0 deg2 by 4176 XMM-Newton archival observations. Top panel: there are 2461 “10 ks” pointings, of which 1309 also have a “20 ks” version. This map in equatorial coordinates shows their location on the sky. The blue line marks the limit of ±20 deg around the galactic plane. Bottom panel: the 1646 X-ray selected galaxy clusters of the X-CLASS catalogue.
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