The spherical collapse model in a universe with cosmological constant
arXiv:astro-ph/0011295 · doi:10.1142/9789812811363_0012
Abstract
We generalize the spherical collapse model for the formation of dark matter halos to apply in a universe with arbitrary positive cosmological constant. We calculate the critical condition for collapse of an overdense region and give exact values of the characteristic densities and redshifts of its evolution.
6 pages, 3 figures, contribution to the proceedings of the 3rd International Workshop on the Identification of Dark Matter (IDM2000) in York, in press