Supermassive black hole growth in hierarchically merging nuclear star clusters
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910755448684544 |
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| author | Kritos, Konstantinos Beckmann, Ricarda S. Silk, Joseph Berti, Emanuele Yi, Sophia Volonteri, Marta Dubois, Yohan Devriendt, Julien |
| author_facet | Kritos, Konstantinos Beckmann, Ricarda S. Silk, Joseph Berti, Emanuele Yi, Sophia Volonteri, Marta Dubois, Yohan Devriendt, Julien |
| contents | Supermassive black holes are prevalent at the centers of massive galaxies, and their masses scale with galaxy properties, increasing evidence suggesting that these trends continue to low stellar masses. Seeds are needed for supermassive black holes, especially at the highest redshifts explored by the James Webb Space Telescope. We study the hierarchical merging of galaxies via cosmological merger trees and argue that the seeds of supermassive black holes formed in nuclear star clusters via stellar black hole mergers at early epochs. Observable tracers include intermediate-mass black holes, nuclear star clusters, and early gas accretion in host dwarf galaxies, along with a potentially detectable stochastic gravitational wave background, ejection of intermediate and supermassive black holes, and consequences of a significant population of tidal disruption events and extreme-mass ratio inspirals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15334 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Supermassive black hole growth in hierarchically merging nuclear star clusters Kritos, Konstantinos Beckmann, Ricarda S. Silk, Joseph Berti, Emanuele Yi, Sophia Volonteri, Marta Dubois, Yohan Devriendt, Julien Astrophysics of Galaxies High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Supermassive black holes are prevalent at the centers of massive galaxies, and their masses scale with galaxy properties, increasing evidence suggesting that these trends continue to low stellar masses. Seeds are needed for supermassive black holes, especially at the highest redshifts explored by the James Webb Space Telescope. We study the hierarchical merging of galaxies via cosmological merger trees and argue that the seeds of supermassive black holes formed in nuclear star clusters via stellar black hole mergers at early epochs. Observable tracers include intermediate-mass black holes, nuclear star clusters, and early gas accretion in host dwarf galaxies, along with a potentially detectable stochastic gravitational wave background, ejection of intermediate and supermassive black holes, and consequences of a significant population of tidal disruption events and extreme-mass ratio inspirals. |
| title | Supermassive black hole growth in hierarchically merging nuclear star clusters |
| topic | Astrophysics of Galaxies High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2412.15334 |