An analytical approach to the dwarf galaxies cusp problem
arXiv:1012.5336 · doi:10.1051/0004-6361/201015330
Abstract
An analytical solution for the discrepancy between observed core-like profiles and predicted cusp profiles in dark matter halos is studied. We calculate the distribution function for Navarro-Frenk-White halos and extract energy from the distribution, taking into account the effects of baryonic physics processes. We show with a simple argument that we can reproduce the evolution of a cusp to a flat density profile by a decrease of the initial potential energy.
6 pages, 2 figures