Angular Clustering of Obscured Active Galactic Nuclei

Details Angular Clustering of Obscured Active Galactic Nuclei Angular Clustering of Obscured Active Galactic Nuclei

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0744g&link_type=abstract

American Astronomical Society, HEAD meeting #9, #7.44; Bulletin of the American Astronomical Society, Vol. 38, p.357

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe the properties of X-ray point-like sources detected over 4.2 sq. degs. of the largest contiguous survey with XMM-Newton to date (the XMM-LSS survey) to fluxes of F2-10 keV 8x10-15 erg/s/cm2 and F0.5-2 keV 2x10-15 erg/s/cm2 respectively. For 1200 sources in the soft band, we find a two-point angular correlation function (ACF) signal similar to previous work, but no correlation for 400 sources in the hard band. A sample of 200 faint sources with hard X-ray spectra does show a 2-3 sigma positive signal with a power-law normalization theta0>40 arcsec. We discuss implications, including the fact that a large correlation length for obscured AGN is inconsistent with simple AGN Unification based on orientation only.

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