Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath
Wave–particle interactions play a crucial role in transferring energy between electromagnetic fields and charged particles in space and astrophysical plasmas. Despite the prevalence of different electromagnetic waves in space, there is still a lack of understanding of fundamental aspects of wave–par...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad0df8 |
| _version_ | 1797384818651037696 |
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| author | Wence Jiang Daniel Verscharen Seong-Yeop Jeong Hui Li Kristopher G. Klein Christopher J. Owen Chi Wang |
| author_facet | Wence Jiang Daniel Verscharen Seong-Yeop Jeong Hui Li Kristopher G. Klein Christopher J. Owen Chi Wang |
| author_sort | Wence Jiang |
| collection | DOAJ |
| description | Wave–particle interactions play a crucial role in transferring energy between electromagnetic fields and charged particles in space and astrophysical plasmas. Despite the prevalence of different electromagnetic waves in space, there is still a lack of understanding of fundamental aspects of wave–particle interactions, particularly in terms of energy flow and velocity-space characteristics. In this study, we combine a novel quasilinear model with observations from the Magnetospheric Multiscale mission to reveal the signatures of resonant interactions between electrons and whistler waves in magnetic holes, which are coherent structures often found in the Earth’s magnetosheath. We investigate the energy transfer rates and velocity-space characteristics associated with Landau and cyclotron resonances between electrons and slightly oblique propagating whistler waves. In the case of our observed magnetic hole, the loss of electron kinetic energy primarily contributes to the growth of whistler waves through the n = −1 cyclotron resonance, where n is the order of the resonance expansion in linear Vlasov–Maxwell theory. The excitation of whistler waves leads to a reduction of the temperature anisotropy and parallel heating of the electrons. Our study offers a new and self-consistent understanding of resonant energy transfer in turbulent plasmas. |
| first_indexed | 2024-03-08T21:45:09Z |
| format | Article |
| id | doaj.art-8ad4c5eb0c4345aeb3be6c7d0acea815 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T21:45:09Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-8ad4c5eb0c4345aeb3be6c7d0acea8152023-12-20T10:08:02ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0196013010.3847/1538-4357/ad0df8Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s MagnetosheathWence Jiang0https://orcid.org/0000-0001-7431-5759Daniel Verscharen1https://orcid.org/0000-0002-0497-1096Seong-Yeop Jeong2https://orcid.org/0000-0001-8529-3217Hui Li3https://orcid.org/0000-0002-4839-4614Kristopher G. Klein4https://orcid.org/0000-0001-6038-1923Christopher J. Owen5https://orcid.org/0000-0002-5982-4667Chi Wang6https://orcid.org/0000-0001-6991-9398State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of China ; jiangwence@swl.ac.cn; Mullard Space Science Laboratory, University College London , Dorking RH5 6NT, UK; Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of ChinaMullard Space Science Laboratory, University College London , Dorking RH5 6NT, UKSamsung Electronics Co. Ltd , Hwaseong, 18448, Republic of KoreaState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of China ; jiangwence@swl.ac.cn; Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of China; University of Chinese Academy of Sciences , Beijing, People's Republic of ChinaDepartment of Planetary Sciences, University of Arizona , Tucson, AZ, USAMullard Space Science Laboratory, University College London , Dorking RH5 6NT, UKState Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of China ; jiangwence@swl.ac.cn; Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences , Beijing 100190, People's Republic of China; University of Chinese Academy of Sciences , Beijing, People's Republic of ChinaWave–particle interactions play a crucial role in transferring energy between electromagnetic fields and charged particles in space and astrophysical plasmas. Despite the prevalence of different electromagnetic waves in space, there is still a lack of understanding of fundamental aspects of wave–particle interactions, particularly in terms of energy flow and velocity-space characteristics. In this study, we combine a novel quasilinear model with observations from the Magnetospheric Multiscale mission to reveal the signatures of resonant interactions between electrons and whistler waves in magnetic holes, which are coherent structures often found in the Earth’s magnetosheath. We investigate the energy transfer rates and velocity-space characteristics associated with Landau and cyclotron resonances between electrons and slightly oblique propagating whistler waves. In the case of our observed magnetic hole, the loss of electron kinetic energy primarily contributes to the growth of whistler waves through the n = −1 cyclotron resonance, where n is the order of the resonance expansion in linear Vlasov–Maxwell theory. The excitation of whistler waves leads to a reduction of the temperature anisotropy and parallel heating of the electrons. Our study offers a new and self-consistent understanding of resonant energy transfer in turbulent plasmas.https://doi.org/10.3847/1538-4357/ad0df8Solar windInterplanetary turbulenceSpace plasmas |
| spellingShingle | Wence Jiang Daniel Verscharen Seong-Yeop Jeong Hui Li Kristopher G. Klein Christopher J. Owen Chi Wang Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath The Astrophysical Journal Solar wind Interplanetary turbulence Space plasmas |
| title | Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath |
| title_full | Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath |
| title_fullStr | Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath |
| title_full_unstemmed | Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath |
| title_short | Velocity-space Signatures of Resonant Energy Transfer between Whistler Waves and Electrons in the Earth’s Magnetosheath |
| title_sort | velocity space signatures of resonant energy transfer between whistler waves and electrons in the earth s magnetosheath |
| topic | Solar wind Interplanetary turbulence Space plasmas |
| url | https://doi.org/10.3847/1538-4357/ad0df8 |
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