Gravitational bremsstrahlung in plasmas and clusters
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866909153023229952 |
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| author | Steane, A. M. |
| author_facet | Steane, A. M. |
| contents | We study the gravitational bremsstrahlung owing to collisions mediated by a $1/r$ potential. We combine classical and first order Born approximation results in order to construct an approximate gravitational `Gaunt factor' for the total emitted energy. We also obtain the cross-section with an angular momentum cut-off, and hence the cross-section for emission via close hyperbolic encounters in a gravitating cluster. These effects are the dominant source of very high frequency gravitational noise in the solar system. The total gravitational wave power of the Sun is $76\pm 20\,$MW. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2309_06972 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Gravitational bremsstrahlung in plasmas and clusters Steane, A. M. High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Plasma Physics 83C35 We study the gravitational bremsstrahlung owing to collisions mediated by a $1/r$ potential. We combine classical and first order Born approximation results in order to construct an approximate gravitational `Gaunt factor' for the total emitted energy. We also obtain the cross-section with an angular momentum cut-off, and hence the cross-section for emission via close hyperbolic encounters in a gravitating cluster. These effects are the dominant source of very high frequency gravitational noise in the solar system. The total gravitational wave power of the Sun is $76\pm 20\,$MW. |
| title | Gravitational bremsstrahlung in plasmas and clusters |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Plasma Physics 83C35 |
| url | https://arxiv.org/abs/2309.06972 |