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INVESTIGATION OF THICKNESS AND ELECTRICAL RESISTIVITY OF THE CURRENT SHEETS IN SOLAR ERUPTIONS
Lin, J.1,2; Li, J.3; Ko, Y. -K.2; Raymond, J. C.2
2009-03-10
Source PublicationASTROPHYSICAL JOURNAL
Volume693Issue:2Pages:1666-1677
AbstractA 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.
KeywordDiffusion Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Magnetic Fields Turbulence
DOI10.1088/0004-637X/693/2/1666
Indexed BySCI
Language英语
WOS IDWOS:000264095100057
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8346
Collection太阳物理研究部
Affiliation1.Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ China, Kunming 650011, Yunnan, Peoples R China
2.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
3.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
Recommended Citation
GB/T 7714
Lin, J.,Li, J.,Ko, Y. -K.,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, Y. -K.,&Raymond, J. C..(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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