气候变化领域集成服务门户(CCPortal): Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite

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DOI	10.1029/2020GL089926
	Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite
	Fukizawa M.; Sakanoi T.; Miyoshi Y.; Kazama Y.; Katoh Y.; Kasahara Y.; Matsuda S.; Matsuoka A.; Kurita S.; Shoji M.; Teramoto M.; Imajo S.; Sinohara I.; Wang S.-Y.; Tam S.W.Y.; Chang T.-F.; Wang B.-J.; Jun C.-W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Electrostatic electron cyclotron harmonic (ECH) waves are generally excited in the magnetic equator region, in the sector from nightside to dayside during geomagnetically active conditions, and cause the pitch angle scattering by cyclotron resonance. The scattered electrons precipitate into the Earth's atmosphere and cause auroral emission. However, there is no observational evidence that ECH waves actually scatter electrons into the loss cone in the magnetosphere. In this study, from simultaneous wave and particle observation data obtained by the Arase satellite equipped with a high-pitch angular resolution electron analyzer, we present evidence that the ECH wave intensity near the magnetic equator is correlated with an electron flux inside the loss cone with an energy of about 5 keV. The simulation suggests that this electron flux contributes to the auroral emission at 557.7 nm with an intensity of about 200 R. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Cyclotrons; Magnetosphere; Plasma theory; Active conditions; Angular resolution; Auroral emission; Electron analyzer; Electron cyclotron harmonic; Observation data; Pitch-angle scattering; Scattered electrons; Electrons; diurnal variation; electron; geomagnetism; magnetosphere; satellite altimetry; wave scattering
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/169352
作者单位	Graduate School of Science, Tohoku University, Sendai, Japan; Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan; Academia Sinica, Institute of Astronomy and Astrophysics, Taipei, Taiwan; Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan; Department of Space Systems Engineering, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu, Japan; Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan
推荐引用方式 GB/T 7714	Fukizawa M.,Sakanoi T.,Miyoshi Y.,et al. Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite[J],2020,47(23).
APA	Fukizawa M..,Sakanoi T..,Miyoshi Y..,Kazama Y..,Katoh Y..,...&Jun C.-W..(2020).Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite.Geophysical Research Letters,47(23).
MLA	Fukizawa M.,et al."Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite".Geophysical Research Letters 47.23(2020).