publication . Article . 2011

THE XMM-NEWTON WIDE FIELD SURVEY IN THE COSMOS FIELD: REDSHIFT EVOLUTION OF AGN BIAS AND SUBDOMINANT ROLE OF MERGERS IN TRIGGERING MODERATE-LUMINOSITY AGNs AT REDSHIFTS UP TO 2.2

V. Allevato; A. Finoguenov; N. Cappelluti; T. Miyaji; G. Hasinger; M. Salvato; M. Brusa; R. Gilli; G. Zamorani; F. Shankar; ...
Open Access
  • Published: 01 Aug 2011
  • Publisher: American Astronomical Society
Abstract
We present a study of the redshift evolution of the projected correlation function of 593 X-ray selected active galactic nuclei (AGNs) with I <SUB>AB</SUB> < 23 and spectroscopic redshifts z < 4, extracted from the 0.5-2 keV X-ray mosaic of the 2.13 deg<SUP>2</SUP> XMM- Cosmic Evolution Survey (COSMOS). We introduce a method to estimate the average bias of the AGN sample and the mass of AGN hosting halos, solving the sample variance using the halo model and taking into account the growth of the structure over time. We find evidence of a redshift evolution of the bias factor for the total population of XMM-COSMOS AGNs from \overline{b}(\overline{z}=0.92)=2.30 +/-...
Subjects
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, Physics, Halo, Astrophysics, Active galactic nucleus, Quasar, Luminosity, Dark matter, Astronomy, Extragalactic astronomy, Redshift, Sample variance, galaxies: active, galaxies: evolution, large-scale structure of universe, quasars: general, surveys
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publication . Article . 2011

THE XMM-NEWTON WIDE FIELD SURVEY IN THE COSMOS FIELD: REDSHIFT EVOLUTION OF AGN BIAS AND SUBDOMINANT ROLE OF MERGERS IN TRIGGERING MODERATE-LUMINOSITY AGNs AT REDSHIFTS UP TO 2.2

V. Allevato; A. Finoguenov; N. Cappelluti; T. Miyaji; G. Hasinger; M. Salvato; M. Brusa; R. Gilli; G. Zamorani; F. Shankar; ...