Asymmetric Dark Matter Stars

Preprint number: CP3-Origins-2015-27 DNRF90 and DIAS-2015-27
Authors: Chris Kouvaris (CP3-Origins & DIAS) and Niklas Grønlund Nielsen (CP3-Origins & DIAS)
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We study the possibility of asymmetric dark matter with self-interactions forming compact stable objects. We solve the Tolman-Oppenheimer-Volkoff equation and find the mass-radius relation of such “dark stars”, their density profile and their Chandrasekhar mass limit. We consider fermionic asymmetric dark matter with Yukawa-type self-interactions appropriate for solving the well known problems of the collisionless dark matter paradigm. We find that in several cases the relativistic effects are significant.