IGGCAS OpenIR  > 地球与行星物理院重点实验室
Reconnection Acceleration in Saturn's Dayside Magnetodisk: A Multicase Study with Cassini
Guo, R. L.1,2; Yao, Z. H.2; Sergis, N.3,4; Wei, Y.1,5; Mitchell, D.6; Roussos, E.7; Palmaerts, B.2; Dunn, W. R.8; Radioti, A.2; Ray, L. C.9; Coates, A. J.8; Grodent, D.2; Arridge, C. S.9; Kollmann, P.6; Krupp, N.7; Waite, J. H.10; Dougherty, M. K.11; Burch, J. L.10; Wan, W. X.1
2018-12-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume868Issue:2Pages:8
AbstractRecently, rotationally driven magnetic reconnection was first discovered in Saturn's dayside magnetosphere. This newly confirmed process could potentially drive bursty phenomena at Saturn, i.e., pulsating energetic particles and auroral emissions. Using Cassini's measurements of magnetic fields and charged particles, we investigate particle acceleration features during three magnetic reconnection events observed in Saturn's dayside magnetodisk. The results suggest that the rotationally driven reconnection process plays a key role in producing energetic electrons (up to 100 keV) and ions (several hundreds of kiloelectron volts). In particular, we find that energetic oxygen ions are locally accelerated at all three reconnection sites. Isolated, multiple reconnection sites were recorded in succession during an interval lasting for much less than one Saturn rotation period. Moreover, a secondary magnetic island is reported for the first time at the dayside, collectively suggesting that the reconnection process is not steady and could be "drizzle-like." This study demonstrates the fundamental importance of internally driven magnetic reconnection in accelerating particles in Saturn's dayside magnetosphere, and likewise in the rapidly rotating Jovian magnetosphere and beyond.
Keywordacceleration of particles magnetic reconnection planetary systems
DOI10.3847/2041-8213/aaedab
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants
WOS KeywordMAGNETIC RECONNECTION ; ELECTRON ACCELERATION ; PLASMA ; FIELD ; MAGNETOSPHERE ; MAGNETOPAUSE ; MAGNETOTAIL
Language英语
Funding ProjectNational Science Foundation of China[41704169] ; National Science Foundation of China[41525016] ; National Science Foundation of China[41474155] ; National Science Foundation of China[41274167] ; Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA ; STFC Consolidated Grant[ST/R000816/1] ; NASA JPL[1243218] ; NASA JPL[1405851] ; STFC consolidated grants[ST/K000977/1] ; STFC consolidated grants[ST/N000722/1]
Funding OrganizationNational Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants ; National Science Foundation of China ; National Science Foundation of China ; 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 Consolidated Grant ; STFC Consolidated Grant ; NASA JPL ; NASA JPL ; STFC consolidated grants ; STFC consolidated grants
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000450844500007
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/89438
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.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium
3.Acad Athens, Off Space Res & Technol, Athens, Greece
4.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, Athens, Greece
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
6.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
7.Max Planck Inst Sonnensyst Forsch, Gottingen, Germany
8.Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England
9.Univ Lancaster, Dept Phys, Lancaster LA14 YB, England
10.Southwest Res Inst, San Antonio, TX USA
11.Imperial Coll, Fac Nat Sci, Dept Phys, London, England
Recommended Citation
GB/T 7714
Guo, R. L.,Yao, Z. H.,Sergis, N.,et al. Reconnection Acceleration in Saturn's Dayside Magnetodisk: A Multicase Study with Cassini[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,868(2):8.
APA Guo, R. L..,Yao, Z. H..,Sergis, N..,Wei, Y..,Mitchell, D..,...&Wan, W. X..(2018).Reconnection Acceleration in Saturn's Dayside Magnetodisk: A Multicase Study with Cassini.ASTROPHYSICAL JOURNAL LETTERS,868(2),8.
MLA Guo, R. L.,et al."Reconnection Acceleration in Saturn's Dayside Magnetodisk: A Multicase Study with Cassini".ASTROPHYSICAL JOURNAL LETTERS 868.2(2018):8.
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