Charged Binaries in Gravitational Tides
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909386744528896 |
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| author | Grilli, Elisa Orselli, Marta Pereñiguez, David Pica, Daniele |
| author_facet | Grilli, Elisa Orselli, Marta Pereñiguez, David Pica, Daniele |
| contents | Next-generation low-frequency interferometers are expected to detect binary systems near supermassive black holes, where tidal effects can alter significantly the motion of the binary. This motivates a broader investigation of how external gravitational fields influence the dynamics of physical systems. In this work, we consider a charged black hole binary system subject to a gravitational tide. We first construct a stationary gravitational tide acting on a dyonic Reissner-Nordström black hole and, focusing on the extreme mass-ratio limit, we analyze the motion of a test particle. By calculating the secular Hamiltonian of the test particle, we obtain the ISCO and light ring tidal shifts in terms of explicit functions of the parameters of the binary. Our results show that tidal corrections are suppressed as the charge of the black hole increases, but they persist in the extremal limit yielding a finite contribution. This work paves the way towards studying tidal effects on other charged systems, such as topological stars. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08089 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Charged Binaries in Gravitational Tides Grilli, Elisa Orselli, Marta Pereñiguez, David Pica, Daniele General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory Next-generation low-frequency interferometers are expected to detect binary systems near supermassive black holes, where tidal effects can alter significantly the motion of the binary. This motivates a broader investigation of how external gravitational fields influence the dynamics of physical systems. In this work, we consider a charged black hole binary system subject to a gravitational tide. We first construct a stationary gravitational tide acting on a dyonic Reissner-Nordström black hole and, focusing on the extreme mass-ratio limit, we analyze the motion of a test particle. By calculating the secular Hamiltonian of the test particle, we obtain the ISCO and light ring tidal shifts in terms of explicit functions of the parameters of the binary. Our results show that tidal corrections are suppressed as the charge of the black hole increases, but they persist in the extremal limit yielding a finite contribution. This work paves the way towards studying tidal effects on other charged systems, such as topological stars. |
| title | Charged Binaries in Gravitational Tides |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory |
| url | https://arxiv.org/abs/2411.08089 |