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

✍ Scribed by Matthias Bartelmann; Klaus Dolag; Francesca Perrotta; Carlo Baccigalupi; Lauro Moscardini; Massimo Meneghetti; Giuseppe Tormen

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 120 KB
• Volume: 49
• Category: Article
• ISSN: 1387-6473
• DOI: 10.1016/j.newar.2005.01.014

✦ Synopsis

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.