X-ray observations of active galactic nuclei in the cosmological context

Barcons, Xavier
Carballo, R.
Carrera, Francisco J.
Ceballos, María Teresa
González-Serrano, José Ignacio
Fabian, A.C.
Warwick, R. S.

Open link

Publication date

September 2018

DOI

10.1023/A:1002112900799

Publisher

Springer Science and Business Media LLC

Journal

issn: 0004-640X

Abstract

We review recent discoveries of obscured Active Galactic Nuclei at significant redshifts with X-ray observations. Most, if not all, the X-ray luminous galaxies found at faint X-ray fluxes could in fact be obscured AGN, where the obscuring material is also forming stars copiously. Given that AGN of various types appear to dominate the source populations at all X-ray fluxes, we also discuss their clustering properties. Current results imply that the population of X-ray selected AGN is not strongly biased, and therefore X-ray observations can be used to trace the distribution of matter out to redshifts ∼ 2.Partial financial support for this work was provided by the DGESID under project PB95-0122. ACF thanks the Royal Society for support.Peer R...