Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 16, Pages 3335-3338Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.3335
Keywords
-
Categories
Ask authors/readers for more resources
Structure formation with cold dark matter (CDM) predicts halos with a central density cusp, which are observationally disfavored. If CDM particles have an annihilation cross section sigma upsilon similar to 10(-29)(m/ GeV) cm(2), then annihilations will soften the cusps. We discuss plausible scenarios for avoiding the early Universe annihilation catastrophe that could result from such a large cross section. The predicted scaling of core density with halo mass depends upon the velocity dependence of sigma upsilon, and s-wave annihilation leads to a core density nearly independent of halo mass, which seems consistent with observations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available