1202.2860 (Jordi Viñas et al.)

Typical density profile for warm dark matter haloes    [PDF]

Jordi Viñas, Eduard Salvador-Solé, Alberto Manrique

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.

View original: http://arxiv.org/abs/1202.2860