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Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet
Cheng, X.1; Li, Y.2; Wan, L. F.1; Ding, M. D.1; Chen, P. F.1; Zhang, J.3; Liu, J. J.4
2018-10-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume866Issue:1Pages:14
Corresponding AuthorCheng, X.(xincheng@nju.edu.cn)
AbstractMagnetic reconnection is a fundamental physical process in various astrophysical, space, and laboratory environments. Many pieces of evidence for magnetic reconnection have been uncovered. However, its specific processes that could be fragmented and turbulent have been short of direct observational evidence. Here, we present observations of a super-hot current sheet during the SOL2017-09-10T X8.2-class solar flare that display the fragmented and turbulent nature of magnetic reconnection. As bilateral plasmas converge toward the current sheet, significant plasma heating and nonthermal motions are detected therein. Two oppositely directed outflow jets are intermittently expelled out of the fragmenting current sheet, whose intensity shows a power-law distribution in the spatial frequency domain. The intensity and velocity of the sunward outflow jets also display a power-law distribution in the temporal frequency domain. The length-to-width ratio of current sheet is estimated to be larger than the theoretical threshold and thus ensures its occurrence. The observations therefore suggest that fragmented and turbulent magnetic reconnection occurs in the long stretching current sheet.
Keywordmagnetic reconnection Sun: coronal mass ejections (CMEs) Sun: flares turbulence
DOI10.3847/1538-4357/aadd16
WOS KeywordCORONAL MASS EJECTION ; FLUX ROPE ; FLARE ; HINODE ; FIELD ; RESISTIVITY ; THICKNESS ; DYNAMICS ; ERUPTION ; DENSITY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000447158200001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21191
Collection中国科学院紫金山天文台
Corresponding AuthorCheng, X.
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China
2.Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
3.George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA
4.Univ Sheffield, Solar Phys & Space Plasma Res Ctr, Sch Math & Stat, Sheffield S3 7RH, S Yorkshire, England
Recommended Citation
GB/T 7714
Cheng, X.,Li, Y.,Wan, L. F.,et al. Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet[J]. ASTROPHYSICAL JOURNAL,2018,866(1):14.
APA Cheng, X..,Li, Y..,Wan, L. F..,Ding, M. D..,Chen, P. F..,...&Liu, J. J..(2018).Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet.ASTROPHYSICAL JOURNAL,866(1),14.
MLA Cheng, X.,et al."Observations of Turbulent Magnetic Reconnection within a Solar Current Sheet".ASTROPHYSICAL JOURNAL 866.1(2018):14.
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