Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties
Abstract Relativistic electron microbursts are correlated with resonant scattering by whistler‐mode chorus waves. Here, we use chorus wave properties obtained from Van Allen Probe A to calculate the duration of relativistic microbursts. A detailed quantitative comparison between observed and calcula...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-04-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL113694 |
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| _version_ | 1850038523078377472 |
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| author | Jiabei He Lunjin Chen Zhiyang Xia Mykhaylo Shumko Lauren Blum |
| author_facet | Jiabei He Lunjin Chen Zhiyang Xia Mykhaylo Shumko Lauren Blum |
| author_sort | Jiabei He |
| collection | DOAJ |
| description | Abstract Relativistic electron microbursts are correlated with resonant scattering by whistler‐mode chorus waves. Here, we use chorus wave properties obtained from Van Allen Probe A to calculate the duration of relativistic microbursts. A detailed quantitative comparison between observed and calculated microburst durations shows consistent ranges and similar correlations with L shell and magnetic local time (MLT). The most apparent trend is in MLT: microburst duration increases from midnight through the dawn sector but decreases after noon. These results highlight the primary role of chorus waves in driving microbursts. Furthermore, we build a constraint on the upper magnetic latitude boundary λ2 of chorus waves that can induce 1 MeV microbursts. The constraint is dependent on MLT. On the dayside, the optimal λ2 typically exceeds 36°, which is higher than on the nightside, suggesting ducted chorus propagation dominates. Chorus waves with higher λ2 are generally more effective in triggering relativistic microbursts. |
| format | Article |
| id | doaj-art-3a0149642829435eacc5dfeb9d8f84d7 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-3a0149642829435eacc5dfeb9d8f84d72025-08-20T02:56:34ZengWileyGeophysical Research Letters0094-82761944-80072025-04-01528n/an/a10.1029/2024GL113694Association of Relativistic Electron Microbursts Duration With Chorus Wave PropertiesJiabei He0Lunjin Chen1Zhiyang Xia2Mykhaylo Shumko3Lauren Blum4Department of Physics University of Texas at Dallas Richardson TX USADepartment of Physics University of Texas at Dallas Richardson TX USADepartment of Physics University of Texas at Dallas Richardson TX USAJohns Hopkins University Applied Physics Laboratory Laurel MD USAUniversity of Colorado Boulder Boulder CO USAAbstract Relativistic electron microbursts are correlated with resonant scattering by whistler‐mode chorus waves. Here, we use chorus wave properties obtained from Van Allen Probe A to calculate the duration of relativistic microbursts. A detailed quantitative comparison between observed and calculated microburst durations shows consistent ranges and similar correlations with L shell and magnetic local time (MLT). The most apparent trend is in MLT: microburst duration increases from midnight through the dawn sector but decreases after noon. These results highlight the primary role of chorus waves in driving microbursts. Furthermore, we build a constraint on the upper magnetic latitude boundary λ2 of chorus waves that can induce 1 MeV microbursts. The constraint is dependent on MLT. On the dayside, the optimal λ2 typically exceeds 36°, which is higher than on the nightside, suggesting ducted chorus propagation dominates. Chorus waves with higher λ2 are generally more effective in triggering relativistic microbursts.https://doi.org/10.1029/2024GL113694 |
| spellingShingle | Jiabei He Lunjin Chen Zhiyang Xia Mykhaylo Shumko Lauren Blum Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties Geophysical Research Letters |
| title | Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties |
| title_full | Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties |
| title_fullStr | Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties |
| title_full_unstemmed | Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties |
| title_short | Association of Relativistic Electron Microbursts Duration With Chorus Wave Properties |
| title_sort | association of relativistic electron microbursts duration with chorus wave properties |
| url | https://doi.org/10.1029/2024GL113694 |
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