The core-cusp problem in cold dark matter halos and supernova feedback

Recent high-quality observations have revealed that DM halos with less-massive galaxies have nearly constant mass-density around the center. On the other hand, present standard paradigm, CDM cosmology have predicted that the mass-density profile of DM halos is divergent at the center. This discrepancy is well known as the Core-Cusp problem. To resolve this problem, we take account the gravitational effects from baryonic gas to DM halos. We have constructed an analytical model and have performed N-body simulations to study the dynamical response of DM halos to change of galactic potential.
[Ogiya & Mori, ApJ, 736, L2 (2011); Ogiya & Mori, arXiv:1206.5412]