Cosmological constrains from X-ray AGN clustering and SNIa data

Details Cosmological constrains from X-ray AGN clustering and SNIa data Cosmological constrains from X-ray AGN clustering and SNIa data

2005-03-11

arxiv.org/abs/astro-ph/0503272v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, to appear in MNRAS Letters

Scientific paper

10.1111/j.1745-3933.2005.00041.x

We put constraints on the main cosmological parameters of different spatially flat cosmological models by combining the recent clustering results of XMM-Newton soft (0.5-2 keV) X-ray sources, which have a redshift distribution with median redshift $z\sim 1.2$, and SNIa data. Using a likelihood procedure we find that the model which best reproduces the observational data and that is consistent with stellar ages is the concordance $\Lambda$CDM model with: $\Omega_{\rm m}\simeq 0.28$, $w\simeq -1$, $H_{\circ} \simeq 72$ km s$^{-1}$ Mpc$^{-1}$, $t_{\circ}\simeq 13.5$Gyr and has an X-ray AGN clustering evolution which is constant in physical coordinates. For a different clustering evolution model (constant in comoving coordinates) we find another viable model, although less probable due to the smaller age of the Universe, with $\Omega_{\rm m}\simeq 0.38$, $w\simeq -1.25$, $H_{\circ} \simeq 70$ km s$^{-1}$ Mpc$^{-1}$, $t_{\circ}\simeq 12.9$Gyr.

Affiliated with

Also associated with

No associations

Rating

Cosmological constrains from X-ray AGN clustering and SNIa data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmological constrains from X-ray AGN clustering and SNIa data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological constrains from X-ray AGN clustering and SNIa data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-452803