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.Comment: 13 pages, 5 figure
