X-ray spectral analysis of C-COSMOS sources.

We present a detailed X-ray spectral analysis of 401 bright sources in the Chandra-COSMOS catalogue with >80 net counts in the 0.5–7 keV band. For 294 sources, with available XMM-Newton spectra with >80 net counts, we performed an indipendent spectral fit of XMM-Newton data, in order to compare the results and look for variability of fit parameters. Finally we performed the simultaneous fit of Chandra and XMM-Newton spectra. The main results concern the distribution of photon index Γ, the nature of the population of sources classified as passive galaxies from the optical/IR SED, but hosting an obscured AGN, and the mismatch between Chandra and XMM-Newton determination of column density. [ABSTRACT FROM AUTHOR]