5 research outputs found
Precision Cosmology from X-ray AGN clustering
We place tight constraints on the main cosmological parameters of spatially
flat cosmological models by using the recent angular clustering results of
XMM-{\it Newton} soft (0.5-2 keV) X-ray sources (Ebrero et al. 2009a), which
have a redshift distribution with a median of . Performing a standard
likelihood procedure, assuming a constant in comoving coordinates AGN
clustering evolution, the AGN bias evolution model of Basilakos et al. (2008)
and the WMAP5 value of , we find stringent simultaneous constraints
in the (w) plane, with ,
w.Comment: Accepted for publication, MNRAS Lett. in press, 5 pages, 2 figure