other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2005MNRAS.356..183B - Mon. Not. R. Astron. Soc., 356, 183-191 (2005/January-1)
The XMM-Newton/2dF Survey - VI. Clustering and bias of the soft X-ray point sources.
BASILAKOS S., PLIONIS M., GEORGAKAKIS A. and GEORGANTOPOULOS I.
Abstract (from CDS):
Using a clustering evolution model which is constant for comoving coordinates (ε=-1.2), a luminosity-dependent density evolution (LDDE) model for the X-ray luminosity function and the concordance cosmological model (Ωm= 1 -ΩΛ= 0.3) we obtain, by inverting Limber's integral equation, a spatial correlation length of r0∼ 16h–1Mpc. This value is larger than that of previous ROSAT surveys as well as of the optical two-degree quasar redshift survey. Only in models where the clustering remains constant for physical coordinates (ε=-3), do we obtain an r0value (∼7.5h–1Mpc) which is consistent with the above surveys.
Finally, comparing the measured angular correlation function with the predictions of the concordance cosmological model, we find for two different bias evolution models that the soft X-ray sources at the present time should be biased with respect to the underline matter fluctuation field with bias values in the range (which depends on the biasing model used): 1.9 ≲b0≲ 2.7 for ε=-1.2 or 1 ≲b0≲ 1.6 for ε=-3.
Abstract Copyright: 2004 RAS
Journal keyword(s): galaxies: clusters: general - cosmology: theory - large-scale structure of Universe
Simbad objects: 4
To bookmark this query, right click on this link: simbad:2005MNRAS.356..183B and select 'bookmark this link' or equivalent in the popup menu