Can Neutron stars constrain Dark Matter?

Details Can Neutron stars constrain Dark Matter? Can Neutron stars constrain Dark Matter?

2010-04-05

arxiv.org/abs/1004.0586v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

20 pages, 5 figures

Scientific paper

We argue that observations of old neutron stars can impose constraints on dark matter candidates even with very small elastic or inelastic cross section, and self-annihilation cross section. We find that old neutron stars close to the galactic center or in globular clusters can maintain a surface temperature that could in principle be detected. Due to their compactness, neutron stars can acrete WIMPs efficiently even if the WIMP-to-nucleon cross section obeys the current limits from direct dark matter searches, and therefore they could constrain a wide range of dark matter candidates.

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