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Features and properties of coronal mass ejection/flare current sheets
Lin J(林隽)1,2; Li, J3; Forbes, TG4; Ko, YK2; Raymond, JC2; Vourlidas, A5; Lin, J (reprint author), Chinese Acad Sci, Natl Astron Observ, China Yunnan Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2007-04-01
卷号658期号:2页码:L123-L126
DOI10.1086/515568
产权排序第1完成单位
收录类别SCI
关键词Diffusion Sun : Flares Sun : Magnetic Fields Turbulence
摘要Solar eruptions occur when magnetic energy is suddenly converted into heat and kinetic energy by magnetic reconnection in a current sheet ( CS). It is often assumed that CSs are too thin to be observable because the electric resistivity n(e) in CSs is taken to be very small. In this work, we show the implications for the CS thickness d estimated from observations of three eruptions by the UVCS and the LASCO experiments on SOHO. We infer the effective n(e) causing the rapid reconnection, which predicts much faster reconnection in a thick CS than that caused by the classical and anomalous resistivities. We find that in these events CSs are observable and have extremely large values of d and n(e), implying that large-scale turbulence is operating within CSs. We also discuss the properties of the so-called hyperresistivity caused by the tearing mode and the relation to our results.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2007-03-28
WOS记录号WOS:000245406000014
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MAGNETIC RECONNECTION ; SOLAR ERUPTIONS ; ACTIVE-REGION ; ACCELERATION ; SIMULATION ; SPECTRA ; FLARES ; LINES
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被引频次:58[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6107
专题太阳物理研究组
通讯作者Lin, J (reprint author), Chinese Acad Sci, Natl Astron Observ, China Yunnan Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatory of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138
3.Institute for Astronomy, University of Hawaii, Honolulu, HI 96822
4.Institute for the Study of Earth, Ocean, and Space, University of New Hampshire, Durham, NH 03824
5.Naval Research Laboratory, Washington, DC 20375
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Lin J,Li, J,Forbes, TG,et al. Features and properties of coronal mass ejection/flare current sheets[J]. ASTROPHYSICAL JOURNAL,2007,658(2):L123-L126.
APA Lin J.,Li, J.,Forbes, TG.,Ko, YK.,Raymond, JC.,...&Lin, J .(2007).Features and properties of coronal mass ejection/flare current sheets.ASTROPHYSICAL JOURNAL,658(2),L123-L126.
MLA Lin J,et al."Features and properties of coronal mass ejection/flare current sheets".ASTROPHYSICAL JOURNAL 658.2(2007):L123-L126.
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