XMM-Newton and Chandra measurements of the AGN intrinsic absorption: dependence on luminosity and redshift
We combine bright XMM-Newton data with the Chandra Deep Field South observations to explore the behavior of the intrinsic AGN absorption, as a function of redshift and luminosity. Our sample consists of 359 sources selected in the hard 2-8 keV band, spanning the flux range 6 × 10-16-3 × 10-13 erg~cm-2~s-1 with a high rate of spectroscopic or
Akylas, A. et al.
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2006