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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.18601 |
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| _version_ | 1866909863927349248 |
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| author | Alcubierre, Miguel Barranco, Juan Bernal, Argelia Degollado, Juan Carlos Diez-Tejedor, Alberto Megevand, Miguel Núñez, Darío Sarbach, Olivier |
| author_facet | Alcubierre, Miguel Barranco, Juan Bernal, Argelia Degollado, Juan Carlos Diez-Tejedor, Alberto Megevand, Miguel Núñez, Darío Sarbach, Olivier |
| contents | We construct gravitational atoms including self-gravity, obtaining solutions of the Einstein-Klein-Gordon equations for a scalar field surrounding a non-rotating black hole in a quasi-stationary approximation. We resolve the region near the horizon as well as the far field region. Our results are relevant in a wide range of masses, from ultralight to MeV scalar fields and for black holes ranging from primordial to supermassive. For instance, a system with a scalar field consistent with ultralight dark matter and a black hole mass comparable to that of Sagittarius A* can be modeled. A density spike near the event horizon, although present, is negligible, contrasting with the prediction in [P. Gondolo and Silk, Phys. Rev. Lett., 83:1719-1722, 1999] for cold dark matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_18601 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Gravitational atoms beyond the test field limit: The case of Sgr A* and ultralight dark matter Alcubierre, Miguel Barranco, Juan Bernal, Argelia Degollado, Juan Carlos Diez-Tejedor, Alberto Megevand, Miguel Núñez, Darío Sarbach, Olivier General Relativity and Quantum Cosmology Astrophysics of Galaxies We construct gravitational atoms including self-gravity, obtaining solutions of the Einstein-Klein-Gordon equations for a scalar field surrounding a non-rotating black hole in a quasi-stationary approximation. We resolve the region near the horizon as well as the far field region. Our results are relevant in a wide range of masses, from ultralight to MeV scalar fields and for black holes ranging from primordial to supermassive. For instance, a system with a scalar field consistent with ultralight dark matter and a black hole mass comparable to that of Sagittarius A* can be modeled. A density spike near the event horizon, although present, is negligible, contrasting with the prediction in [P. Gondolo and Silk, Phys. Rev. Lett., 83:1719-1722, 1999] for cold dark matter. |
| title | Gravitational atoms beyond the test field limit: The case of Sgr A* and ultralight dark matter |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2411.18601 |