Spherical Collapse Model
Astrophysics
2007-05-23 v3
Abstract
We studied the spherical collapse model in the flat CDM cosmology and provided exact and analytical formulaes for the calculation of the two important parameters in the application of Press-Schechter theory, the critical density contrast and the ratio of cluster/background densities at the virialization point in terms of a media variable which can be solved precisely by numerical methods.
Keywords
Cite
@article{arxiv.astro-ph/0412628,
title = {Spherical Collapse Model},
author = {Ding-fang Zeng and Yi-hong Gao},
journal= {arXiv preprint arXiv:astro-ph/0412628},
year = {2007}
}
Comments
part of the numerical results changed, two typoes corrected