Typical density profile for warm dark matter haloes

Details Typical density profile for warm dark matter haloes Typical density profile for warm dark matter haloes

2012-02-13

arxiv.org/abs/1202.2860v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 3 figures. Submitted to MNRAS

Scientific paper

Using the model recently developed by Salvador-Sol\'e et al. (2012), we derive the typical spherically averaged halo density profile from the power-spectrum of density perturbations in the concordant \Lambda\ warm dark matter (WDM) cosmology with 2 keV non-thermal sterile neutrinos. This allows us to analyse separately the effects on the density profile at small radii of the spectrum cutoff caused by free-streaming and the bound in the fine-grained phase-space density, both due to the non-negligible particle velocities at decoupling.

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