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Derivation of the spiral motion of an eruptive prominence and its explanation
Gu XM(顾啸马)1; Zhong SH(钟树华)1; Liang HF(梁红飞)1; Zhan, LS2; Gu, XM (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunan Observ, Kunming 650011, Peoples R China.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2006
卷号6期号:5页码:617-624
DOI10.1088/1009-9271/6/5/14
产权排序第1完成单位
收录类别SCI
关键词Sun : Eruptive Prominence Sun : Spiral Motion
摘要A 2D velocity field of the eruptive prominence (EP) of 1991 March 5 is obtained from its spectral data observed at the Yunnan Observatory and the velocity distributions along the entrance slit are derived for different observing frames. Under the assumption that matter in the EP undergoes axial, radial and possible rotational motions, we construct a theoretical velocity distribution of the EP along the entrance slit, to derive, by fitting, the angular velocity of rotation w and the other three parameters (axial velocity v(o), radial velocity v(r) and the angle between the EP plane and the line of sight phi). We found: an averaged angular velocity omega of 3.0 X 10(-3) arc s(-1) and the variation of omega with the height above the solar limb. As the EP rises, the matter within it in fact moves along a spiral path around its axis. The spiral motion may be explained by the theory of plasma 'double pole diffusion' (DPD) caused by a sharp density gradient between the eruptive prominence and the surrounding corona. A theoretical angular velocity omega' is estimated based on the DPD and basically coincides with U) obtained from the optimal velocity fitting.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
归档日期2006-10-09
WOS记录号WOS:000241487800014
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; FLUX-ROPE ; MODEL ; FLARE ; PROPAGATION ; SOHO ; EIT
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6098
专题太阳物理研究组
通讯作者Gu, XM (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunan Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
2.Jingdezhen Ceramic Institute, Jingdezhen 333000
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GB/T 7714
Gu XM,Zhong SH,Liang HF,et al. Derivation of the spiral motion of an eruptive prominence and its explanation[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(5):617-624.
APA Gu XM,Zhong SH,Liang HF,Zhan, LS,&Gu, XM .(2006).Derivation of the spiral motion of an eruptive prominence and its explanation.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(5),617-624.
MLA Gu XM,et al."Derivation of the spiral motion of an eruptive prominence and its explanation".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.5(2006):617-624.
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