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Inside a Lunar Mini-Magnetosphere: First Energetic Neutral Atom Measurements on the Lunar Surface
Xie, Lianghai1,2,3; Li, Lei1,2,3; Zhang, Aibing2,4; Zhang, Yiteng1,2,3; Cao, Jinbin5; Wieser, Martin6; Zhang, Xiaoping7; Wang, Jingdong1,2,3; Zhou, Bin1,2,3; Feng, Yongyong1,2,3; Kong, Linggao2; Li, Yong7; Wang, Fang8
2021-07-28
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume48Issue:14Pages:9
AbstractDue to lack of in situ observations, people still know little about the formation conditions and the internal structure of lunar mini-magnetosphere. Here we present the first energetic neutral atom (ENA) measurement on lunar surface by the Chang'E-4 mission. It is found that when downstream from the Imbrium antipode magnetic anomalies, the measured ENA fluxes are generally decreased, suggesting a mini-magnetosphere that can shield the lunar surface from the solar wind. Further studies show that the shielding effect can only be found when the ion inertia length is small (<120 km) and some solar wind ions can penetrate into the mini-magnetosphere with a penetrating efficiency positively correlated with the solar wind dynamic pressure. When the ion inertia length is large, no shielding effect can be found. With the help of Hall MHD simulations, we confirm the existence of a mini-magnetosphere and the shielding effect anti-correlated with ion inertia length.
KeywordChang'E-4 mini-magnetosphere ENA
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
DOI10.1029/2021GL093943
WOS KeywordMAGNETIC-ANOMALIES ; SOLAR-WIND ; MAGNETOMETER ; FIELDS ; MOON
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[41941001] ; National Key R&D Program of China[2020YFE0202100] ; Swedish National Space Agency, SNSA[95/11] ; Swedish National Space Agency, SNSA[122/18] ; Science and Technology Development Fund (FDCT) of Macau[008/2017/AFJ] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; Swedish National Space Agency, SNSA ; Swedish National Space Agency, SNSA ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000711496700045
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74451
Collection中国科学院国家天文台
Corresponding AuthorLi, Lei
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China
3.Joint Res & Dev Ctr Chinese Sci Acad & Shen Cty, Beijing, Shandong, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China
6.Swedish Inst Space Phys, Kiruna, Sweden
7.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ China, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Xie, Lianghai,Li, Lei,Zhang, Aibing,et al. Inside a Lunar Mini-Magnetosphere: First Energetic Neutral Atom Measurements on the Lunar Surface[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(14):9.
APA Xie, Lianghai.,Li, Lei.,Zhang, Aibing.,Zhang, Yiteng.,Cao, Jinbin.,...&Wang, Fang.(2021).Inside a Lunar Mini-Magnetosphere: First Energetic Neutral Atom Measurements on the Lunar Surface.GEOPHYSICAL RESEARCH LETTERS,48(14),9.
MLA Xie, Lianghai,et al."Inside a Lunar Mini-Magnetosphere: First Energetic Neutral Atom Measurements on the Lunar Surface".GEOPHYSICAL RESEARCH LETTERS 48.14(2021):9.
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