Spherical Collapse Model

Details Spherical Collapse Model Spherical Collapse Model

2004-12-27

arxiv.org/abs/astro-ph/0412628v3

Astronomy and Astrophysics

Astrophysics

part of the numerical results changed, two typoes corrected

Scientific paper

We studied the spherical collapse model in the flat $\Lambda$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.

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