Gravitational Stability of Vortices in Bose-Einstein Condensate Dark Matter

Details Gravitational Stability of Vortices in Bose-Einstein Condensate Dark Matter Gravitational Stability of Vortices in Bose-Einstein Condensate Dark Matter

2009-02-03

arxiv.org/abs/0902.0605v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

17 pages, 4 figures, submitted to CQG

Scientific paper

We investigate a simple model for a galactic halo under the assumption that it is dominated by a dark matter component in the form of a Bose-Einstein condensate involving an ultra-light scalar particle. In particular we discuss the possibility if the dark matter is in superfluid state then a rotating galactic halo might contain quantised vortices which would be low-energy analogues of cosmic strings. Using known solutions for the density profiles of such vortices we compute the self-gravitational interactions in such halos and place bounds on the parameters describing such models, such as the mass of the particles involved.

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