Boson star superradiance with spinning effects and in time domain
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866910879777292288 |
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| author | Chang, Fu-Ming Gao, He-Yu Jaramillo, Víctor Meng, Xin Zhou, Shuang-Yong |
| author_facet | Chang, Fu-Ming Gao, He-Yu Jaramillo, Víctor Meng, Xin Zhou, Shuang-Yong |
| contents | Superradiance, the process by which waves are amplified through energy and angular momentum transfer, can also occur in horizonless objects like boson stars, due to both the real space and internal field space rotations. In this work, we study superradiance in the frequency and time domains for static and spinning boson stars, constructed within general relativity and with a self-interacting complex scalar field as a matter source. Using linear perturbation theory and three dimensional nonlinear simulations, we calculate amplification factors and analyze energy and angular momentum transfer in scattering processes, with results showing consistency between approaches. Wave scattering inside a cavity containing a boson star is also examined, demonstrating the effects of confinement on amplification. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_01894 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Boson star superradiance with spinning effects and in time domain Chang, Fu-Ming Gao, He-Yu Jaramillo, Víctor Meng, Xin Zhou, Shuang-Yong General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory Superradiance, the process by which waves are amplified through energy and angular momentum transfer, can also occur in horizonless objects like boson stars, due to both the real space and internal field space rotations. In this work, we study superradiance in the frequency and time domains for static and spinning boson stars, constructed within general relativity and with a self-interacting complex scalar field as a matter source. Using linear perturbation theory and three dimensional nonlinear simulations, we calculate amplification factors and analyze energy and angular momentum transfer in scattering processes, with results showing consistency between approaches. Wave scattering inside a cavity containing a boson star is also examined, demonstrating the effects of confinement on amplification. |
| title | Boson star superradiance with spinning effects and in time domain |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory |
| url | https://arxiv.org/abs/2412.01894 |