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INVESTIGATION OF THICKNESS AND ELECTRICAL RESISTIVITY OF THE CURRENT SHEETS IN SOLAR ERUPTIONS
Lin J(林隽)1,2; Li, J3; Ko, YK2; Raymond, JC2; Lin, J (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ China, POB 110, Kunming 650011, Yunnan, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2009-03-10
卷号693期号:2页码:1666-1677
DOI10.1088/0004-637X/693/2/1666
产权排序第1完成单位
收录类别SCI
关键词Diffusion Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Magnetic Fields Turbulence
摘要A discussion of the thickness of current sheets in solar eruptions, d, led Lin et al. in 2007 to estimate very large values for the effective resistivity, eta(e). Here, we address some questions raised by that paper. We apply the limb synoptic map technique and find d between 5.0 x 10(4) and 4.6 x 10(5) km, increasing with both time and altitude. The possibility that large apparent d and eta(e) result from projection effects is examined and rejected. We derive theoretical scaling laws relating d to other observables that corroborate this conclusion and thus help confine both d and eta(e) to a reasonable range. The possible impact of our results on the existing models of particle acceleration in reconnecting current sheets is also briefly discussed.
项目资助者Ministry of Science and Technology of China [2006CB806303] ; National Natural Science Foundation of China [10873030, 40636031] ; Chinese Academy of Sciences [KJCX2-YW-T04] ; NASA [NNX07AL72G]
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2009-03-11
WOS记录号WOS:000264095100057
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; RECONNECTING CURRENT SHEETS ; MAGNETIC RECONNECTION ; PARTICLE-ACCELERATION ; TEARING MODE ; FIELD ; FLARES ; WIND ; TURBULENCE ; MECHANISM
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6146
专题太阳物理研究组
通讯作者Lin, J (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ China, POB 110, Kunming 650011, Yunnan, Peoples R China.
作者单位1.National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China
2.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
3.Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA
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GB/T 7714
Lin J,Li, J,Ko, YK,et al. INVESTIGATION OF THICKNESS AND ELECTRICAL RESISTIVITY OF THE CURRENT SHEETS IN SOLAR ERUPTIONS[J]. ASTROPHYSICAL JOURNAL,2009,693(2):1666-1677.
APA Lin J,Li, J,Ko, YK,Raymond, JC,&Lin, J .(2009).INVESTIGATION OF THICKNESS AND ELECTRICAL RESISTIVITY OF THE CURRENT SHEETS IN SOLAR ERUPTIONS.ASTROPHYSICAL JOURNAL,693(2),1666-1677.
MLA Lin J,et al."INVESTIGATION OF THICKNESS AND ELECTRICAL RESISTIVITY OF THE CURRENT SHEETS IN SOLAR ERUPTIONS".ASTROPHYSICAL JOURNAL 693.2(2009):1666-1677.
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