Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9828020 | New Astronomy Reviews | 2005 | 5 Pages |
Abstract
High resolution, numerical simulations of 17 cluster-sized dark-matter haloes in eight different cosmologies with and without dynamical dark-energy confirm the picture that core halo densities are imprinted early during their formation by the mean cosmological density. Quite independent of cosmology, halo concentrations have a log-normal distribution with a scatter of â¼0.2 about the mean. We propose a simple scaling relation for halo concentrations in dark-energy cosmologies.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Matthias Bartelmann, Klaus Dolag, Francesca Perrotta, Carlo Baccigalupi, Lauro Moscardini, Massimo Meneghetti, Giuseppe Tormen,