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Thermal Electron Behavior in Obliquely Propagating Whistler Waves: MMS Observations in the Solar Wind

文献类型：期刊论文

作者Liu, Z. Y.4; Wang, B.3,5,6; Zong, Q. G.4; Yao, S. T.7; Pollock, C. J.1; Le, G.2
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2021-07-28
卷号48期号:14页码:9
ISSN号0094-8276
关键词electron acceleration wave-particle interaction whistler waves Landau trapping phase bunching
DOI10.1029/2021GL094099
英文摘要Determining how electrons behave in whistler waves is fundamental for understanding whistler waves' role in space electron energization. Here, we report a whistler wave-electron interaction case observed by Magnetospheric Multiscale spacecraft in the solar wind. The observations suggest whistler waves can effectively trap/bunch thermal electrons. In the direction perpendicular to the background magnetic fields, thermal electrons are bunched by and rotate with wave perpendicular fields, manifesting as repeated inclined stripes in rhythm with the waves on electron gyrophase-time spectrograms. On the other hand, in the parallel direction, thermal electrons are trapped by wave parallel electric fields, resulting in trapping islands around wave parallel potential maxima. Here, the boundaries of these trapping islands are displayed as V-shaped structures of large phase space density on electron pitch angle-time spectrograms, since the waves propagate along electron density gradient. The observations presented here well demonstrate whistler waves' capability of modulating electron phase space trajectories.
WOS关键词ACCELERATION ; PARTICLES
资助项目China Space Agency project[D020301] ; National Natural Science Foundation of China[42011530080] ; National Natural Science Foundation of China[41604148]
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000711496700046
资助机构China Space Agency project ; China Space Agency project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Space Agency project ; China Space Agency project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Space Agency project ; China Space Agency project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Space Agency project ; China Space Agency project ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/103003]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Zong, Q. G.
作者单位1.Denali Sci, Fairbanks, AK USA
2.NASA, Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD USA
3.Beijing Inst Tracking & Telecommun Technol, Beijing, Peoples R China
4.Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
7.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Z. Y.,Wang, B.,Zong, Q. G.,et al. Thermal Electron Behavior in Obliquely Propagating Whistler Waves: MMS Observations in the Solar Wind[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(14):9.
APA Liu, Z. Y.,Wang, B.,Zong, Q. G.,Yao, S. T.,Pollock, C. J.,&Le, G..(2021).Thermal Electron Behavior in Obliquely Propagating Whistler Waves: MMS Observations in the Solar Wind.GEOPHYSICAL RESEARCH LETTERS,48(14),9.
MLA Liu, Z. Y.,et al."Thermal Electron Behavior in Obliquely Propagating Whistler Waves: MMS Observations in the Solar Wind".GEOPHYSICAL RESEARCH LETTERS 48.14(2021):9.

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来源：地质与地球物理研究所

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