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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.
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2006
Volume6Issue:5Pages:617-624
DOI10.1088/1009-9271/6/5/14
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun : Eruptive Prominence Sun : Spiral Motion
AbstractA 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1009-9271
URL查看原文
Archive Date2006-10-09
WOS IDWOS:000241487800014
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; FLUX-ROPE ; MODEL ; FLARE ; PROPAGATION ; SOHO ; EIT
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6098
Collection太阳物理研究组
Corresponding AuthorGu, XM (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunan Observ, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
2.Jingdezhen Ceramic Institute, Jingdezhen 333000
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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