IGGCAS OpenIR  > 地球与行星物理院重点实验室
Long-standing Small-scale Reconnection Processes at Saturn Revealed by Cassini
Guo, R. L.1,2; Yao, Z. H.3; Sergis, N.4,5; Wei, Y.1,6; Xu, X. J.2; Coates, A. J.7; Delamere, P. A.8; Roussos, E.9; Arridge, C. S.10; Waite, J. H.11; Krupp, N.9; Mitche, D.12; Burch, J.11; Dougherty, M. K.13; Wan, W. X.1,6
2019-10-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume884Issue:1Pages:6
AbstractThe internal mass source from the icy moon Enceladus in Saturn?s rapidly rotating magnetosphere drives electromagnetic dynamics in multiple spatial and temporal scales. The distribution and circulation of the internal plasma and associated energy are thus crucial in understanding Saturn?s magnetospheric environment. Magnetic reconnection is one of the key processes in driving plasma and energy transport in the magnetosphere, and also a fundamental plasma process in energizing charged particles. Recent works suggested that reconnection driven by Saturn?s rapid rotation might appear as a chain of microscale structures, named drizzle-like reconnection. The drizzle-like reconnection could exist not only in the nightside magnetodisk, but also in the dayside magnetodisk. Here, using in situ measurements from the Cassini spacecraft, we report multiple reconnection sites that were successively detected during a time interval longer than one rotation period. The time separation between two adjacently detected reconnection sites can be much less than one rotation period, implying that the reconnection processes are likely small-scale, or frequently repetitive. The spatial distribution of the identified long-standing multiple small reconnection site sequences shows no significant preference on local times. We propose that the small reconnection sites discussed in this Letter are rotationally driven and rotate with the magnetosphere. Since the reconnection process on Saturn can be long-durational, the rotational regime can cause these small-scale reconnection sites to spread to all local times, resulting in global release of energy and mass from the magnetosphere.
KeywordSolar magnetic reconnection Planetary magnetosphere Interplanetary particle acceleration
DOI10.3847/2041-8213/ab4429
Funding OrganizationStrategic 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC
WOS KeywordMAGNETIC-FIELD ; MAGNETOSPHERE
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDA17010201] ; National Natural Science Foundation of China[41704169] ; National Natural Science Foundation of China[41525016] ; National Natural Science Foundation of China[41274167] ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT)[119/2017/A3] ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC[ST/S000240/1]
Funding OrganizationStrategic 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC ; 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 ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; State Key Laboratory of Lunar and Planetary Sciences (Macau University of Science and Technology, Macau FDCT) ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC ; STFC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000492951700001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93872
Collection地球与行星物理院重点实验室
Corresponding AuthorGuo, R. L.
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China
3.Univ Liege, Star Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium
4.Acad Athens, Off Space Res & Technol, Athens, Greece
5.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, Athens, Greece
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
7.UCL Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
8.Univ Alaska Fairbanks, Geophys Inst, 903 Koyokuk Dr, Fairbanks, AK 99775 USA
9.Max Planck Inst Sonnensyst Forsch, Gottingen, Germany
10.Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
11.Southwest Res Inst, San Antonio, TX USA
12.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
13.Imperial Coll, Fac Nat Sci, Dept Phys, London, England
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Guo, R. L.,Yao, Z. H.,Sergis, N.,et al. Long-standing Small-scale Reconnection Processes at Saturn Revealed by Cassini[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,884(1):6.
APA Guo, R. L..,Yao, Z. H..,Sergis, N..,Wei, Y..,Xu, X. J..,...&Wan, W. X..(2019).Long-standing Small-scale Reconnection Processes at Saturn Revealed by Cassini.ASTROPHYSICAL JOURNAL LETTERS,884(1),6.
MLA Guo, R. L.,et al."Long-standing Small-scale Reconnection Processes at Saturn Revealed by Cassini".ASTROPHYSICAL JOURNAL LETTERS 884.1(2019):6.
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