Visualization of rapid electron precipitation via chorus element wave–particle interactions
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説明
Chorus waves, among the most intense electromagnetic emissions in the Earth’s magnetosphere, magnetized planets, and laboratory plasmas, play an important role in the acceleration and loss of energetic electrons in the plasma universe through resonant interactions with electrons. However, the spatial evolution of the electron resonant interactions with electromagnetic waves remains poorly understood owing to imaging difficulties. Here we provide a compelling visualization of chorus element wave–particle interactions in the Earth’s magnetosphere. Through in-situ measurements of chorus waveforms with the Arase satellite and transient auroral flashes from electron precipitation events as detected by 100-Hz video sampling from the ground, Earth’s aurora becomes a display for the resonant interactions. Our observations capture an asymmetric spatial development, correlated strongly with the amplitude variation of discrete chorus elements. This finding is not theoretically predicted but helps in understanding the rapid scattering processes of energetic electrons near the Earth and other magnetized planets.
収録刊行物
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- Nature Communications
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Nature Communications 10 257-, 2019-01-16
Springer Nature
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詳細情報 詳細情報について
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- CRID
- 1050845763139317760
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- NII論文ID
- 120006550406
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- ISSN
- 20411723
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- HANDLE
- 2433/236054
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- PubMed
- 30651535
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
