XMM observations of the brightest 2-10 keV sources in the BeppoSAX GRATIS Survey

We propose to observe with XMM 5 bright high galactic latitude hard Xray (210 keV) sources discovered by the BeppoSAX GRATIS Survey, an unbiased shallow survey program in the 210 keV energy band which covers a relatively large area of the sky. XMM observations of these hard Xray sources will allow a detailed investigation of their energy spectral distribution, providing firm constraints to the energy spectral index and the amount of absorbing neutral hydrogen column densities. This informations will clarify the nature of these sources and contribute to constraint truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]