Strong-gravity precession resonances for binary systems orbiting a Schwarzschild black hole
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912674699280384 |
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| author | Cocco, Marta Grignani, Gianluca Harmark, Troels Orselli, Marta Pica, Daniele |
| author_facet | Cocco, Marta Grignani, Gianluca Harmark, Troels Orselli, Marta Pica, Daniele |
| contents | Binary systems of compact objects in close orbit around a supermassive black hole (SMBH) may form in galactic nuclei, providing a unique environment to probe strong-gravity tidal effects on the binary's dynamics. In this work, we investigate precession resonances arising between the periastron precession frequency of a binary system and its orbital frequencies around the SMBH. By modeling the SMBH as a Schwarzschild black hole, we find that relativistic effects in the tidal field give rise to a significantly richer resonance spectrum compared to the Newtonian case. This result is supported by both perturbative and numerical analyses of the quadrupolar tidal interaction in the strong-gravity regime. Our results reveal new signatures for strong-gravity effects in such triple systems, with potential implications for gravitational-wave astronomy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_15901 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strong-gravity precession resonances for binary systems orbiting a Schwarzschild black hole Cocco, Marta Grignani, Gianluca Harmark, Troels Orselli, Marta Pica, Daniele General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Physics - Theory Binary systems of compact objects in close orbit around a supermassive black hole (SMBH) may form in galactic nuclei, providing a unique environment to probe strong-gravity tidal effects on the binary's dynamics. In this work, we investigate precession resonances arising between the periastron precession frequency of a binary system and its orbital frequencies around the SMBH. By modeling the SMBH as a Schwarzschild black hole, we find that relativistic effects in the tidal field give rise to a significantly richer resonance spectrum compared to the Newtonian case. This result is supported by both perturbative and numerical analyses of the quadrupolar tidal interaction in the strong-gravity regime. Our results reveal new signatures for strong-gravity effects in such triple systems, with potential implications for gravitational-wave astronomy. |
| title | Strong-gravity precession resonances for binary systems orbiting a Schwarzschild black hole |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Physics - Theory |
| url | https://arxiv.org/abs/2505.15901 |