The Bright Sample: 

This is a complete and representative sample of 400 bright serendipitous XMM-Newton sources selected at high Galactic latitude (|bII|>20°) using the EPIC MOS2 data. This project is led by the Osservatorio Astronomico di Brera and consists of two complete flux-limited (Sx > 7x10-14 erg cm-2 s-1) samples: the XMM Bright Sample (XMM BS, 389 sources on ~28 sq deg of sky) and the XMM Hard Bright Sample (XMM HBS, 67 sources on ~25 sq deg of sky) selected in the 0.5-4.5 keV and 4.5-7.5 keV energy bands, respectively. The well defined criteria (completeness, representativeness, etc..) of these samples allow both a detailed study of individual sources as well as statistical population studies.

Detailed information on this project can be found here.