On the plasma quasi-thermal noise in the outer heliosphere
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866929303826989056 |
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| author | Meyer-Vernet, Nicole Lecacheux, Alain |
| author_facet | Meyer-Vernet, Nicole Lecacheux, Alain |
| contents | The recent paper by Li et al. on electron quasi-thermal noise in the outer heliosphere is flawed. It assumes the plasma drift speed to be much smaller than the electron thermal speed, even though both quantities are of the same order of magnitude in the outer heliosphere inward of the termination shock, because of the low plasma temperature. In this case, the Langmuir wave dispersion equation and the quasi-thermal noise in the antenna frame are completely changed. Furthermore, these calculations neglect the shot noise, which should produce a large contribution below the plasma frequency with the Voyager antennas in the outer heliosphere. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_04150 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On the plasma quasi-thermal noise in the outer heliosphere Meyer-Vernet, Nicole Lecacheux, Alain Space Physics Solar and Stellar Astrophysics Plasma Physics The recent paper by Li et al. on electron quasi-thermal noise in the outer heliosphere is flawed. It assumes the plasma drift speed to be much smaller than the electron thermal speed, even though both quantities are of the same order of magnitude in the outer heliosphere inward of the termination shock, because of the low plasma temperature. In this case, the Langmuir wave dispersion equation and the quasi-thermal noise in the antenna frame are completely changed. Furthermore, these calculations neglect the shot noise, which should produce a large contribution below the plasma frequency with the Voyager antennas in the outer heliosphere. |
| title | On the plasma quasi-thermal noise in the outer heliosphere |
| topic | Space Physics Solar and Stellar Astrophysics Plasma Physics |
| url | https://arxiv.org/abs/2404.04150 |