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Large-Scale Current Sheets in Flares and CMEs
Lin J(林隽)1,2; Ni L(倪蕾)1,2
Source PublicationGeophysical Monograph Book Series - ELECTRIC CURRENTS IN GEOSPACE AND BEYOND
2018-03-31
Volume235
Pages239-255
DOI10.1002/9781119324522.ch15
Author of SourceAndreas Keiling, Octav Marghitu, and Michael Wheatland.
Contribution Rank第1完成单位
Indexed ByEI ; CPCI
Conference NameAGU Chapman Conference on Currents in Geospace and Beyond
Conference Date2016-05-22
Conference PlaceDubrovnik, CROATIA
Conference SponsorAGU
Abstract

The catastrophe model of the solar eruption predicted that a long current sheet (CS) develops in the major eruption. The CS length and the dynamics of the ejecta are dominated by both the rate of magnetic reconnection and the background magnetic field. Formation and development of the long CS were confirmed by observations soon after it was predicted. Furthermore, the CS was found much thicker than expected by the traditional theory. Works in both theories and observations regarding the physics behind the unexpectedly thick CS have been performed for many years, but the question is still open. Recent numerical experiments suggest that the turbulence due to various instability inside CS accounts for the thick CS and fast reconnection that drives the major eruption. In this review, we first introduce the model and its prediction of the long CS, and the corresponding confirmations by observations. Then, we discuss studies of various CS features performed so far, including investigations of its geometric scale and internal fine structures, together with the possible mechanisms for observations. Finally, we list the differences between the classical understanding of the CS and the facts revealed by both the observations and numerical simulations, and discuss possible reasons why the differences occur.

Funding ProjectProgram 973 grant[2013CBA01503] ; NSFC[U1631130] ; NSFC[11573064] ; NSFC[11333007] ; CAS[QYZDJ-SSW-SLH012] ; CAS[XDA15010900] ; Western Light 2014 ; Youth Innovation Promotion Association CAS ; NSFC-Guangdong Joint Funds[NSFC2015-460] ; NSFC-Guangdong Joint Funds[NSFC2015-463] ; Project of the Group for Innovation of Yunnan Province
Funding OrganizationProgram 973 grant[2013CBA01503] ; NSFC[U1631130, 11573064, 11333007] ; CAS[QYZDJ-SSW-SLH012, XDA15010900] ; Western Light 2014 ; Youth Innovation Promotion Association CAS ; NSFC-Guangdong Joint Funds[NSFC2015-460, NSFC2015-463] ; Project of the Group for Innovation of Yunnan Province
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeProceedings Paper; Book chapter (CH)
PublisherAMER GEOPHYSICAL UNION
Publication Place2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
ISBN978-1-119-32579-6; 978-1-119-32449-2
ISSN0065-8448
URL查看原文
WOS IDWOS:000476687100015
WOS Research AreaAstronomy & Astrophysics ; Geochemistry & Geophysics
WOS SubjectAstronomy & Astrophysics ; Geochemistry & Geophysics
WOS KeywordCoronal Mass Ejections ; Supra-arcade Downflows ; X-ray-emission ; Magnetic Reconnection ; Solar-flare ; Flux-rope ; Magnetohydrodynamic Simulation ; Chromospheric Evaporation ; Evolution ; Model
EI Accession Number20194507654656
EI KeywordsMagnetoplasma
EI Classification Number461.9 Biology - 701.2 Magnetism: Basic Concepts and Phenomena - 932.3 Plasma Physics
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20382
Collection太阳物理研究组
Corresponding AuthorLin J(林隽)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan P. R. China;
2.Center for Astronomical Mega‐ Science, Chinese Academy of Sciences, Beijing, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Lin J,Ni L. Large-Scale Current Sheets in Flares and CMEs[C]//Andreas Keiling, Octav Marghitu, and Michael Wheatland.. 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA:AMER GEOPHYSICAL UNION,2018:239-255.
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