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  4. 中国科学院地球与行星物理重点实验室
Whistler Wings and Reflected Particles During Solar Wind Interaction of Lunar Magnetic Anomalies

文献类型：期刊论文

作者Zhang, Hui1,5,6,7; Wei, Yong1,5,6,7; Zhong, Jun1,5,6,7; Zhang, Tianxin1,5,6,7; Liu, Libo1,5,6,7; Ni, Binbin2; Cao, Jinbin3; Fu, Song2; Chen, Yiding1,5,6,7; Fu, Suiyan4
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2021-04-28
卷号48期号:8页码:9
ISSN号0094-8276
关键词moon reflection solar wind whistler waves whistler wings
DOI10.1029/2021GL092425
英文摘要The solar wind interaction of small-scale lunar magnetic anomalies remains unsolved due to lack of in situ observations. A dedicated coordinate system is established here to reconstruct the distributions of two remotely sensed symptoms of this interaction: the low-frequency whistlers and reflected protons. It is found that these whistlers form a pair of wings beside the Moon and they originate from the low-altitude interaction region, instead of from the higher altitudes where the reflected protons arrive and the associated shocks possibly form. Electrons and protons may behave differently in the interaction region. The incident electrons remain in a fluid state and may be diverted by the anomalies, exciting the low-frequency whistlers. The protons, however, become unmagnetized and are reflected specularly by the vertical electric fields. These electric fields may derive from the charge separation/different motions of the electrons and protons, although the presence of low-altitude shocks cannot be ruled out completely. Plain Language Summary The solar-wind interaction of the large-scale global magnetic fields of the planets in the solar system has been studied extensively, while that of a small-scale magnetic field is not fully understood mainly because of lack of in situ observations inside the interaction region. Here, two key remotely sensed symptoms, the reflected protons and the associated similar to 1 Hz whistler waves, are analyzed to diagnose the solar wind interaction of the lunar anomalies, the small-scale magnetic fields. It is found that a pair of whistler wings forms beside the Moon, which roots on the low-altitude solar wind interaction region of the anomalies. This finding excludes the possibility that the whistlers are produced by the reflected protons which in fact reach the much higher altitudes. The protons are found to be specularly reflected and a vertical electric field must play a dominant role in the reflection. This vertical electric field can arise from the charge separation or motion difference of the incident electrons and protons which may behave differently during the interaction. The deflection of the electrons is thought to excite the whistlers observed. The solar wind interacting scenario here is thus distinct to that of a planet with a giant and strong planetary magnetic field.
WOS关键词MOON ; SURFACE ; FIELD ; MAGNETOMETER ; WAVES
资助项目B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Natural Science Foundation of China[41731068] ; National Natural Science Foundation of China[41774175] ; National Natural Science Foundation of China[41941001] ; National Natural Science Foundation of China[41674163] ; National Natural Science Foundation of China[41974186] ; NASA[NAS5-02099]
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000672324900012
资助机构B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NASA ; NASA ; NASA ; NASA ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NASA ; NASA ; NASA ; NASA ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NASA ; NASA ; NASA ; NASA ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NASA ; NASA ; NASA ; NASA
源URL[http://ir.iggcas.ac.cn/handle/132A11/101997]  
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Zhang, Hui
作者单位1.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
2.Wuhan Univ, Sch Elect Informat, Dept Space Phys, Wuhan, Peoples R China
3.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China
4.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
6.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China
7.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Hui,Wei, Yong,Zhong, Jun,et al. Whistler Wings and Reflected Particles During Solar Wind Interaction of Lunar Magnetic Anomalies[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(8):9.
APA Zhang, Hui.,Wei, Yong.,Zhong, Jun.,Zhang, Tianxin.,Liu, Libo.,...&Wan, Weixing.(2021).Whistler Wings and Reflected Particles During Solar Wind Interaction of Lunar Magnetic Anomalies.GEOPHYSICAL RESEARCH LETTERS,48(8),9.
MLA Zhang, Hui,et al."Whistler Wings and Reflected Particles During Solar Wind Interaction of Lunar Magnetic Anomalies".GEOPHYSICAL RESEARCH LETTERS 48.8(2021):9.

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来源：地质与地球物理研究所

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