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Gravitational Stability of Vortices in Bose-Einstein Condensate Dark Matter
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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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Cited by 3 Pith papers
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Vortices and rotating solitons in ultralight dark matter
Rotating solitons in self-interacting ultralight dark matter form through a uniform vortex lattice, with a maximum radius about 1.59 times and a maximum rotation rate about 1.34 times the square root of the central density.
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Classical Fluid Analogies for Schr\"odinger-Newton Systems
The authors show that classical fluid analogies for Schrödinger-Newton systems are only consistent in a semi-classical limit and that a pseudo-Reynolds number can be defined for void dynamics.
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