Evolution of dark-matter haloes in a variety of dark-energy cosmologies

Details Evolution of dark-matter haloes in a variety of dark-energy cosmologies Evolution of dark-matter haloes in a variety of dark-energy cosmologies

2004-04-26

arxiv.org/abs/astro-ph/0404489v1

New Astron.Rev. 49 (2005) 199-203

Astronomy and Astrophysics

Astrophysics

proceedings contribution to "Dark Matter/Dark Energy 2004"

Scientific paper

10.1016/j.newar.2005.01.014

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 ~0.2 about the mean. We propose a simple scaling relation for halo concentrations in dark-energy cosmologies.

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