Dark matter mini-halo around the compact objects: the formation, evolution and possible contribution to the cosmic ray electrons/positrons
Abstract
Dark matter particles may be captured by a star and then thermalized in the star's core. At the end of its life a massive star collapses suddenly and a compact object is formed. The dark matter particles redistribute accordingly. In the inelastic dark matter model, an extended dense dark matter mini-halo surrounding the neutron star may be formed. Such mini-halos may be common in the Galaxy. The electron/positron flux resulting in the annihilation of dark matter particles, however, is unable to give rise to observable signal unless a nascent mini-halo is within a distance ~ a few 0.1 pc from the Earth.
- Publication:
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Journal of Cosmology and Astroparticle Physics
- Pub Date:
- January 2012
- DOI:
- 10.1088/1475-7516/2012/01/023
- arXiv:
- arXiv:1112.3681
- Bibcode:
- 2012JCAP...01..023Y
- Keywords:
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- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 12 pages, 4 figures, Accepted for publication by JCAP