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Advances in High Energy Physics
Volume 2013 (2013), Article ID 856196, 5 pages
Review Article

The Dark Side of Neutron Stars

CP3-Origins, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark

Received 19 August 2013; Accepted 12 November 2013

Academic Editor: Konstantin Belotsky

Copyright © 2013 Chris Kouvaris. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We review severe constraints on asymmetric bosonic dark matter based on observations of old neutron stars. Under certain conditions, dark matter particles in the form of asymmetric bosonic WIMPs can be effectively trapped onto nearby neutron stars, where they can rapidly thermalize and concentrate in the core of the star. If some conditions are met, the WIMP population can collapse gravitationally and form a black hole that can eventually destroy the star. Based on the existence of old nearby neutron stars, we can exclude certain classes of dark matter candidates.