Evolution of dark-matter haloes in a variety of dark-energy cosmologies
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 ∼0.2 about the mean. We propose a simple scaling relation for halo concentrations in dark-energy cosmologies.
- Publication:
-
New Astronomy Reviews
- Pub Date:
- May 2005
- DOI:
- 10.1016/j.newar.2005.01.014
- arXiv:
- arXiv:astro-ph/0404489
- Bibcode:
- 2005NewAR..49..199B
- Keywords:
-
- Astrophysics
- E-Print:
- proceedings contribution to "Dark Matter/Dark Energy 2004"