IATE 20350
INSTITUTO DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Unidad Ejecutora - UE
artículos
Título:
A Consistent Comparison of Bias Models using Observational Data
Autor/es:
PAPAGEORGIOU, A; PLIONIS M.; BASILAKOS S.; RAGONE FIGUEROA C.
Revista:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2012 vol. 422 p. 106 - 116
ISSN:
0035-8711
Resumen:
We derive an analytic model for the redshift evolution of linear bias, allowing for interactions and merging of themass tracers, by solving a second-order differential equation based on linear perturbation theory and the Friedmann-Lemaitre solutions of the cosmological field equations. We then study the halo-mass dependence of the bias evolu-tion, using the dark matter halo distribution in a LambdaCDM simulation in order to calibrate the free parameters of themodel. Finally, we compare our theoretical predictions with available observational data and find a good agreement.In particular, we find that the bias of optical QSOs evolve differently than those selected in X-rays and that theircorresponding typical dark matter halo mass is ~10^13 h^{-1}M_{odot} and > 5 x10^{13} h^{-1} M_{odot}, respectively.
