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.

Evolution of dark-matter haloes in a variety of dark-energy cosmologies / Bartelmann, M.; Dolag, K.; Perrotta, F.; Baccigalupi, C.; Moscardini, L.; Meneghetti, M.; Tormen, G.. - In: NEW ASTRONOMY REVIEWS. - ISSN 1387-6473. - 49:2-6(2005), pp. 199-203. [10.1016/j.newar.2005.01.014]

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

Perrotta, F.;Baccigalupi, C.;
2005-01-01

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.
2005
49
2-6
199
203
https://arxiv.org/abs/astro-ph/0404489
Bartelmann, M.; Dolag, K.; Perrotta, F.; Baccigalupi, C.; Moscardini, L.; Meneghetti, M.; Tormen, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/12733
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