Universal gravitational self-force for a point mass orbiting around a compact star
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917684431552512 |
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| author | Feng, Xuefeng Yang, Huan |
| author_facet | Feng, Xuefeng Yang, Huan |
| contents | In this work, we study the gravitational back-reaction (i.e., the "self-force") of a point mass moving around a non-rotating, compact star on a circular orbit. We find that the additional self-force, comparing with the case with a point mass orbiting around a Schwarzschild black hole, can be well characterized by an universal frequency-dependent function multiplied by the (dynamical) tidal deformability of the compact star. This finding provides the foundation for building the waveform model for an extreme mass-ratio inspiral system around a star-like black hole mimicker, which is relevant for testing General Relativity and exotic compact objects with space-borne gravitational wave detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_02101 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Universal gravitational self-force for a point mass orbiting around a compact star Feng, Xuefeng Yang, Huan General Relativity and Quantum Cosmology In this work, we study the gravitational back-reaction (i.e., the "self-force") of a point mass moving around a non-rotating, compact star on a circular orbit. We find that the additional self-force, comparing with the case with a point mass orbiting around a Schwarzschild black hole, can be well characterized by an universal frequency-dependent function multiplied by the (dynamical) tidal deformability of the compact star. This finding provides the foundation for building the waveform model for an extreme mass-ratio inspiral system around a star-like black hole mimicker, which is relevant for testing General Relativity and exotic compact objects with space-borne gravitational wave detectors. |
| title | Universal gravitational self-force for a point mass orbiting around a compact star |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2406.02101 |