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Multiple X-line Reconnection Observed in Mercury's Magnetotail Driven by an Interplanetary Coronal Mass Ejection

文献类型：期刊论文

作者Zhong, J.4; Lee, L. C.2,3; Wang, X. G.1; Pu, Z. Y.5; He, J. S.5; Wei, Y.4; Wan, W. X.4
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2020-04-10
卷号893期号:1页码:5
ISSN号2041-8205
关键词Solar magnetic reconnection Mercury (planet) Space plasmas Planetary magnetosphere Solar coronal mass ejections Solar-planetary interactions
DOI10.3847/2041-8213/ab8380
英文摘要How magnetic reconnection drives Mercury's magnetospheric dynamics under extreme solar wind conditions is not well understood. Here we report MESSENGER observations of an active reconnection event in Mercury's magnetotail driven by an interplanetary coronal mass ejection on 2011 November 23. The primary Hall magnetic field, sequential passage of X-lines with Hall field perturbations, and flux ropes (FRs) provide unambiguous evidence of multiple X-line reconnection in an unstable ion diffusion region. In addition, large FRs consisting of multiple successive small-scale FRs are ejected tailward at quasi-periodic intervals of similar to 1 minute, which is comparable to the Dungey cycle time. We propose that these large FRs are generated by the interaction and coalescence of multiple ion-scale FRs. This is distinct from the commonly accepted Earth-like substorm process where plasmoids are created by widely separated X-lines in the magnetotail. These observations suggest that during extreme solar wind conditions multiple X-line reconnection may dominate the tail reconnection process and control the global dynamics of Mercury's magnetosphere.
WOS关键词MESSENGER OBSERVATIONS ; MAGNETIC RECONNECTION ; COLLISIONLESS RECONNECTION ; INSTRUMENT ; SUBSTORMS ; FIELD
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010201] ; National Natural Science Foundation of China[41874198] ; National Natural Science Foundation of China[41674178] ; National Natural Science Foundation of China[41621004] ; National Natural Science Foundation of China[41874200] ; Science and Technology Development Fund (FDCT) of Macau[0035/2018/AFJ]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000526404300001
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of 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 ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of 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 ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of 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 ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of 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 ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau ; Science and Technology Development Fund (FDCT) of Macau
源URL[http://ir.iggcas.ac.cn/handle/132A11/95567]  
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Zhong, J.
作者单位1.Harbin Inst Technol, Dept Phys, Harbin, Peoples R China
2.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China
3.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
5.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, J.,Lee, L. C.,Wang, X. G.,et al. Multiple X-line Reconnection Observed in Mercury's Magnetotail Driven by an Interplanetary Coronal Mass Ejection[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,893(1):5.
APA Zhong, J..,Lee, L. C..,Wang, X. G..,Pu, Z. Y..,He, J. S..,...&Wan, W. X..(2020).Multiple X-line Reconnection Observed in Mercury's Magnetotail Driven by an Interplanetary Coronal Mass Ejection.ASTROPHYSICAL JOURNAL LETTERS,893(1),5.
MLA Zhong, J.,et al."Multiple X-line Reconnection Observed in Mercury's Magnetotail Driven by an Interplanetary Coronal Mass Ejection".ASTROPHYSICAL JOURNAL LETTERS 893.1(2020):5.

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来源：地质与地球物理研究所

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