气候变化领域集成服务门户(CCPortal): Relativistic Electron Microbursts as High-Energy Tail of Pulsating Aurora Electrons

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DOI	10.1029/2020GL090360
	Relativistic Electron Microbursts as High-Energy Tail of Pulsating Aurora Electrons
	Miyoshi Y.; Saito S.; Kurita S.; Asamura K.; Hosokawa K.; Sakanoi T.; Mitani T.; Ogawa Y.; Oyama S.; Tsuchiya F.; Jones S.L.; Jaynes A.N.; Blake J.B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	In this study, by simulating the wave-particle interactions, we show that subrelativistic/relativistic electron microbursts form the high-energy tail of pulsating aurora (PsA). Whistler-mode chorus waves that propagate along the magnetic field lines at high latitudes cause precipitation bursts of electrons with a wide energy range from a few kiloelectron volts (PsA) to several megaelectron volts (relativistic microbursts). The rising tone elements of chorus waves cause individual microbursts of subrelativistic/relativistic electrons and the internal modulation of PsA with a frequency of a few hertz. The chorus bursts for a few seconds cause the microburst trains of subrelativistic/relativistic electrons and the main pulsations of PsA. Our simulation studies demonstrate that both PsA and relativistic electron microbursts originate simultaneously from pitch angle scattering by chorus wave-particle interactions along the field line. ©2020. The Authors.
英文关键词	Electromagnetic waves; Electrons; Particle interactions; Wave plasma interactions; Electron microbursts; Internal modulations; Magnetic field line; Pitch-angle scattering; Relativistic electron; Relativistic microbursts; Wave-particle interactions; Whistler-mode chorus; Atmospherics; aurora; electromagnetic field; electromagnetic radiation; electromagnetic wave; electron; energetics; frequency analysis; magnetic field
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169488
作者单位	Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan; National Institute of Information and Communications Technology, Koganei, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan; Graduate School of Informatics and Engineering, The University of Electro-Communications, Chofu, Japan; Graduate School of Science, Tohoku University, Sendai, Japan; National Institute of Polar Research, Tachikawa, Japan; The Graduate University for Advanced Studies, SOKENDAI, Hayama, Japan; Space Physics and Astronomy Research Unit, University of Oulu, Oulu, Finland; Goddard Space Flight Center, NASA, Greenbelt, MD, United States; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States; Aerospace Corporation, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Miyoshi Y.,Saito S.,Kurita S.,et al. Relativistic Electron Microbursts as High-Energy Tail of Pulsating Aurora Electrons[J],2020,47(21).
APA	Miyoshi Y..,Saito S..,Kurita S..,Asamura K..,Hosokawa K..,...&Blake J.B..(2020).Relativistic Electron Microbursts as High-Energy Tail of Pulsating Aurora Electrons.Geophysical Research Letters,47(21).
MLA	Miyoshi Y.,et al."Relativistic Electron Microbursts as High-Energy Tail of Pulsating Aurora Electrons".Geophysical Research Letters 47.21(2020).