期刊
ASTROPHYSICAL JOURNAL
卷 561, 期 2, 页码 L143-L146出版社
IOP PUBLISHING LTD
DOI: 10.1086/324677
关键词
cosmology : theory; dark matter; galaxies : halos; large-scale structure of universe; methods : numerical
We develop a phenomenological model to predict the clustering of dark matter halos on the light cone by combining several existing theoretical models. Assuming that the velocity field of halos on large scales is approximated by linear theory, we propose an empirical prescription of a scale, mass, and time dependence of halo biasing. We test our model against the Hubble volume N-body simulation and examine its validity and limitations. We find a good agreement in two-point correlation functions of dark matter halos between the phenomenological model predictions and measurements from the simulation for R > 5 h(-1) Mpc in both the real and redshift spaces. Although calibrated on the mass scale of groups and clusters and for redshifts of up to z similar to 2 the model is quite general and can be applied to a wider range of astrophysical objects, such as galaxies and quasars, if the relation between dark halos and visible objects is specified.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据