Clustering of Dark Matter Halos on the Light-cone

Details Clustering of Dark Matter Halos on the Light-cone Clustering of Dark Matter Halos on the Light-cone

2001-10-03

arxiv.org/abs/astro-ph/0110073v1

Astronomy and Astrophysics

Astrophysics

7 pages, invited talk at "AMiBA 2001: High-z Clusters, Missing Baryons, and CMB Polarization" (Taipei, June 2001)

Scientific paper

A phenomenological model for the clustering of dark matter halos on the light-cone is presented. In particular, an empirical prescription for the scale-, mass-, and time-dependence of halo biasing is described in detail. A comparison of the model predictions against the light-cone output from the Hubble Volume $N$-body simulation indicates that the present model is fairly accurate for scale above $\sim 5h^{-1}$Mpc. Then I argue that the practical limitation in applying this model comes from the fact that we have not yet fully understood what are clusters of galaxies, especially at high redshifts. This point of view may turn out to be too pessimistic after all, but should be kept in mind in attempting {\it precision cosmology} with clusters of galaxies.

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