Derivation of the spiral motion of an eruptive prominence and its explanation
文献类型：期刊论文
| 作者 | Gu XM(顾啸马)1 ; Zhong SH(钟树华)1; Liang HF(梁红飞)1; Zhan, LS2
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| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2006 |
| 卷号 | 6期号:5页码:617-624 |
| ISSN号 | 1009-9271 |
| 关键词 | Sun : eruptive prominence Sun : spiral motion |
| 通讯作者 | Gu, XM (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunan Observ, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CORONAL MASS EJECTIONS ; FLUX-ROPE ; MODEL ; FLARE ; PROPAGATION ; SOHO ; EIT |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1009-9271/6/5/14/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000241487800014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6098]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 2.Jingdezhen Ceramic Institute, Jingdezhen 333000 |
| 推荐引用方式 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.(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. |
入库方式： OAI收割
来源：云南天文台
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