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Fate of scalar dark matter solitons around supermassive galactic black holes.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . 1/15/2020, Vol. 101 Issue 2, p1-1. 1p. - Publication Year :
- 2020
-
Abstract
- In scalar-field dark matter scenarios, a scalar-field soliton could form at the center of galactic halos, around the supermassive black holes that sit at the center of galaxies. Focusing on the large scalar-mass limit, where the soliton is formed by the balance between self-gravity and a repulsive self-interaction, we study the infall of the scalar field onto the central Schwarzschild black hole. We derive the scalar-field profile, from the Schwarzschild radius to the large radii dominated by the scalar cloud. We show that the steady state solution selects the maximum allowed flux, with a critical profile that is similar to the transonic solution obtained for the hydrodynamic case. This finite flux, which scales as the inverse of the self-interaction coupling, is small enough to allow the dark matter soliton to survive for many Hubble times. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 101
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 141620373
- Full Text :
- https://doi.org/10.1103/PhysRevD.101.023521