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Cosmology from XMM High-Z AGN Clustering | | Manolis Plionis
; Spyros Basilakos
; | | Date: |
24 Jan 2007 | | Abstract: | We review the high-redshift X-ray selected AGN clustering, based on the XMM/2dF survey, and compare it with other recent XMM-based results. Using the recent Hasinger et al. (2005) and La Franca et al. (2005) luminosity functions we find that the spatial clustering lengths, derived using Limber’s inversion equation, are $sim 17$ and 20 $h^{-1}$ Mpc for the soft and hard band sources while their median redshifts are ${ar z}sim 1.2$ and 0.8, respectively. The corresponding bias factors at $z=ar{z}$ are $sim 5.3pm 0.9$ and $sim 5.1pm1.1$, respectively. Within the framework of a flat cosmological model we find that our results support a model with $Omega_m simeq 0.26$, $sigma_8simeq 0.75$, $hsimeq 0.72$, w$simeq -0.9$ (in excellent agreement with the 3 year WMAP results). We also find the present day bias of X-ray AGNs to be $b_{circ}sim 2$. | | Source: | arXiv, astro-ph/0701696 | | Services: | Forum | Review | PDF | Favorites | |
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