Electron Heat Flux and Whistler Instability in the Earth's Magnetosheath
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911620605673472 |
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| author | Svenningsson, Ida Yordanova, Emiliya Khotyaintsev, Yuri V. André, Mats Cozzani, Giulia Chasapis, Alexandros Schwartz, Steven J. |
| author_facet | Svenningsson, Ida Yordanova, Emiliya Khotyaintsev, Yuri V. André, Mats Cozzani, Giulia Chasapis, Alexandros Schwartz, Steven J. |
| contents | Despite heat flux's role in regulating energy conversion in collisionless plasmas, its properties and evolution in the magnetosheath downstream of the Earth's bow shock are scarcely explored. We use MMS in situ measurements to quantify and characterize the electron heat flux in the magnetosheath. We find that the heat flux is shaped by the magnetosheath magnetic field as it drapes around the magnetosphere. While it is affected by solar wind upstream conditions and increases with magnetic field strength, it is not substantially changed by local magnetosheath processes. Also, the heat flux is limited by whistler instability thresholds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_10275 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electron Heat Flux and Whistler Instability in the Earth's Magnetosheath Svenningsson, Ida Yordanova, Emiliya Khotyaintsev, Yuri V. André, Mats Cozzani, Giulia Chasapis, Alexandros Schwartz, Steven J. Space Physics Earth and Planetary Astrophysics Plasma Physics Despite heat flux's role in regulating energy conversion in collisionless plasmas, its properties and evolution in the magnetosheath downstream of the Earth's bow shock are scarcely explored. We use MMS in situ measurements to quantify and characterize the electron heat flux in the magnetosheath. We find that the heat flux is shaped by the magnetosheath magnetic field as it drapes around the magnetosphere. While it is affected by solar wind upstream conditions and increases with magnetic field strength, it is not substantially changed by local magnetosheath processes. Also, the heat flux is limited by whistler instability thresholds. |
| title | Electron Heat Flux and Whistler Instability in the Earth's Magnetosheath |
| topic | Space Physics Earth and Planetary Astrophysics Plasma Physics |
| url | https://arxiv.org/abs/2511.10275 |