Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope
Abstract The electromagnetic electron Kelvin‐Helmholtz instability (EM EKHI) and its impact on the dynamics inside a flux rope (FR) is investigated through observations from the Magnetospheric Multiscale mission. The convection term dominated electric field drives E × B drift in the FR, which suppor...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL111450 |
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| author | K. Jiang S. Y. Huang Q. M. Lu Z. G. Yuan Q. Y. Xiong |
| author_facet | K. Jiang S. Y. Huang Q. M. Lu Z. G. Yuan Q. Y. Xiong |
| author_sort | K. Jiang |
| collection | DOAJ |
| description | Abstract The electromagnetic electron Kelvin‐Helmholtz instability (EM EKHI) and its impact on the dynamics inside a flux rope (FR) is investigated through observations from the Magnetospheric Multiscale mission. The convection term dominated electric field drives E × B drift in the FR, which supports a strong electron shear flow. The electron shear flow is unstable to the EM EKHI, which results in an electron velocity vortex and many current filaments in the FR. In one of the current filaments, ion and electron demagnetization and strong energy conversion are observed. The continuous radial nulls and obvious reconstructed X‐line topology indicate that magnetic reconnection may occur in this current filament. |
| format | Article |
| id | doaj-art-636c771a5ef84f53b1d565d44e447c2f |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-636c771a5ef84f53b1d565d44e447c2f2025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL111450Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux RopeK. Jiang0S. Y. Huang1Q. M. Lu2Z. G. Yuan3Q. Y. Xiong4School of Earth and Space Science and Technology Hubei Luojia Laboratory Wuhan University Wuhan ChinaSchool of Earth and Space Science and Technology Hubei Luojia Laboratory Wuhan University Wuhan ChinaSchool of Earth and Space Sciences University of Science and Technology of China Hefei ChinaSchool of Earth and Space Science and Technology Hubei Luojia Laboratory Wuhan University Wuhan ChinaSchool of Earth and Space Science and Technology Hubei Luojia Laboratory Wuhan University Wuhan ChinaAbstract The electromagnetic electron Kelvin‐Helmholtz instability (EM EKHI) and its impact on the dynamics inside a flux rope (FR) is investigated through observations from the Magnetospheric Multiscale mission. The convection term dominated electric field drives E × B drift in the FR, which supports a strong electron shear flow. The electron shear flow is unstable to the EM EKHI, which results in an electron velocity vortex and many current filaments in the FR. In one of the current filaments, ion and electron demagnetization and strong energy conversion are observed. The continuous radial nulls and obvious reconstructed X‐line topology indicate that magnetic reconnection may occur in this current filament.https://doi.org/10.1029/2024GL111450mesoscalesFACslompe |
| spellingShingle | K. Jiang S. Y. Huang Q. M. Lu Z. G. Yuan Q. Y. Xiong Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope Geophysical Research Letters mesoscales FACs lompe |
| title | Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope |
| title_full | Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope |
| title_fullStr | Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope |
| title_full_unstemmed | Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope |
| title_short | Observations of the Electromagnetic Electron Kelvin‐Helmholtz Instability and Its Impact on the Dynamics Inside a Flux Rope |
| title_sort | observations of the electromagnetic electron kelvin helmholtz instability and its impact on the dynamics inside a flux rope |
| topic | mesoscales FACs lompe |
| url | https://doi.org/10.1029/2024GL111450 |
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