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Rotationally driven magnetic reconnection in Saturn's dayside

文献类型：期刊论文

作者Guo, R. L.1,2; Yao, Z. H.2; Wei, Y.1,3; Ray, L. C.4; Rae, I. J.5; Arridge, C. S.4; Coates, A. J.5; Delamere, P. A.6; Sergis, N.7,8; Kollmann, P.9
刊名NATURE ASTRONOMY
出版日期2018-08-01
卷号2期号:8页码:640-645
ISSN号2397-3366
DOI10.1038/s41550-018-0461-9
文献子类Article
英文摘要Magnetic reconnection is a key process that explosively accelerates charged particles, generating phenomena such as nebular flares(1), solar flares(2) and stunning aurorae(3). In planetary magnetospheres, magnetic reconnection has often been identified on the dayside magnetopause and in the nightside magnetodisc, where thin-current-sheet conditions are conducive to reconnections(4). The dayside magnetodisc is usually considered thicker than the nightside due to the compression of solar wind, and is therefore not an ideal environment for reconnection. In contrast, a recent statistical study of magnetic flux circulation strongly suggests that magnetic reconnection must occur throughout Saturn's dayside magnetospheres(5). Additionally, the source of energetic plasma can be present in the noon sector of giant planetary magnetospheres(6). However, so far, dayside magnetic reconnection has only been identified at the magnetopause. Here, we report direct evidence of near-noon reconnection within Saturn's magnetodisc using measurements from the Cassini spacecraft. The measured energetic electrons and ions (ranging from tens to hundreds of keV) and the estimated energy flux of -2.6 mW m(-2) within the reconnection region are sufficient to power aurorae. We suggest that dayside magnetodisc reconnection can explain bursty phenomena in the dayside magnetospheres of giant planets, which can potentially advance our understanding of quasi-periodic injections of relativistic electrons(6) and auroral pulsations(7).
WOS关键词JOVIAN MAGNETOTAIL ; FIELD ; MAGNETOPAUSE ; JUPITER ; MAGNETOSPHERE ; ACCELERATION ; INJECTIONS ; ELECTRONS
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000440524400019
出版者NATURE PUBLISHING GROUP
资助机构National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; EU ; EU ; EU ; EU ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; PRODEX programme ; PRODEX programme ; PRODEX programme ; PRODEX programme ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; STFC ; STFC ; STFC ; STFC ; SAO fellowship ; SAO fellowship ; SAO fellowship ; SAO fellowship ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; 41704169 ; 41704169 ; 41704169 ; 41704169 ; 41274167 ; 41274167 ; 41274167 ; 41274167 ; 41621063) ; 41621063) ; 41621063) ; 41621063) ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; EU ; EU ; EU ; EU ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; PRODEX programme ; PRODEX programme ; PRODEX programme ; PRODEX programme ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; STFC ; STFC ; STFC ; STFC ; SAO fellowship ; SAO fellowship ; SAO fellowship ; SAO fellowship ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; 41704169 ; 41704169 ; 41704169 ; 41704169 ; 41274167 ; 41274167 ; 41274167 ; 41274167 ; 41621063) ; 41621063) ; 41621063) ; 41621063) ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; EU ; EU ; EU ; EU ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; PRODEX programme ; PRODEX programme ; PRODEX programme ; PRODEX programme ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; STFC ; STFC ; STFC ; STFC ; SAO fellowship ; SAO fellowship ; SAO fellowship ; SAO fellowship ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; 41704169 ; 41704169 ; 41704169 ; 41704169 ; 41274167 ; 41274167 ; 41274167 ; 41274167 ; 41621063) ; 41621063) ; 41621063) ; 41621063) ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; National Science Foundation of China(41525016 ; EU ; EU ; EU ; EU ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; NASA (managed by the Jet Propulsion Laboratory) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; European Space Agency (ESA) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Lunar and Planetary Science Laboratory (a partner laboratory of the Key Laboratory of Lunar and Deep Space Exploration) (Macau FDCT grant)(039/2013/A2) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; Science and Technology Facilities Council (STFC)(ST/N000722/1) ; PRODEX programme ; PRODEX programme ; PRODEX programme ; PRODEX programme ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; STFC ; STFC ; STFC ; STFC ; SAO fellowship ; SAO fellowship ; SAO fellowship ; SAO fellowship ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; ESA(4000120752/17/NL/MH) ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; STFC Consolidated Grants(ST/N000722/1 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; ST/K000977/1) ; 41704169 ; 41704169 ; 41704169 ; 41704169 ; 41274167 ; 41274167 ; 41274167 ; 41274167 ; 41621063) ; 41621063) ; 41621063) ; 41621063)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88141]  
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Yao, Z. H.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Univ Lancaster, Dept Phys, Lancaster, England
5.Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England
6.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA
7.Acad Athens, Off Space Res & Technol, Athens, Greece
8.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, Athens, Greece
9.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
10.Southwest Res Inst, San Antonio, TX USA
推荐引用方式
GB/T 7714		 Guo, R. L.,Yao, Z. H.,Wei, Y.,et al. Rotationally driven magnetic reconnection in Saturn's dayside[J]. NATURE ASTRONOMY,2018,2(8):640-645.
APA Guo, R. L..,Yao, Z. H..,Wei, Y..,Ray, L. C..,Rae, I. J..,...&Dougherty, M. K..(2018).Rotationally driven magnetic reconnection in Saturn's dayside.NATURE ASTRONOMY,2(8),640-645.
MLA Guo, R. L.,et al."Rotationally driven magnetic reconnection in Saturn's dayside".NATURE ASTRONOMY 2.8(2018):640-645.

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来源：地质与地球物理研究所

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