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Paper: X-ray Absorption in Active Galactic Nuclei
Volume: 373, The Central Engine of Active Galactic Nuclei
Page: 447
Authors: Maiolino, R.; Risaliti, G.
Abstract: We review some of the main physical and statistical properties of the X-ray absorber in AGNs. In particular, we review the distribution of the absorbing column density inferred from X-ray observations of various AGN samples. We discuss the location of the X-ray absorber and the relation with the dust absorption at optical and infrared wavelengths. Finally, we shortly review the recent findings on X-ray absorption at high luminosities and at high redshift.
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