MG14 - Talk detail |
Participant |
Sanchis-Gual, Nicolas | |||||||
Institution |
University of Valencia - Doctor Moliner, 50 - Burjassot - Valencia - Spain | |||||||
Session |
BS2 |
Accepted |
Yes |
Order |
4 |
Time |
15:45 | 15' |
Talk |
Oral abstract |
Title |
Quasistationary Solutions of Self-Gravitating Scalar Fields Around Black Holes | |||||
Coauthors | Degollado, Juan Carlos; Montero, Pedro J.; Font, Jose A. | |||||||
Abstract |
Recent perturbative studies have shown the existence of long-lived, quasi-stationary configurations of scalar fields around black holes. In particular, such configurations have been found to survive for cosmological timescales, which is a requirement for viable dark matter halo models in galaxies based on such type of structures. We have performed a series of numerical relativity simulations of dynamical non-rotating black holes surrounded by self-gravitating scalar fields. We have solved numerically the coupled system of equations formed by the Einstein and the Klein-Gordon equations under the assumption of spherical symmetry using spherical coordinates. Our results confirm the existence of oscillating, long-lived, self-gravitating scalar field configurations around non-rotating black holes in highly dynamical spacetimes with a rich scalar field environment. Our numerical simulations are long-term stable and allow for the extraction of the resonant frequencies to make a direct comparison with results obtained in the linearized regime. |
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