Gravitational Stability of Vortices in Bose-Einstein Condensate Dark Matter

Mark N Brook (1,2), Peter Coles (1,3) ((1) School of Physics & Astronomy, University of Nottingham, (2) Institute of Cancer Research, London, (3) Maynooth University, Ireland)
Arxiv ID: 0902.0605Last updated: 9/16/2022
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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