derivationofthespiralmotionofaneruptiveprominenceanditsexplanation
文献类型：期刊论文
| 作者 | XiaoMa Gu2; ShuHua Zhong2; HongFei Liang2; LaSheng Zhan1 |
| 刊名 | chinesejournalofastronomyandastrophysics
 |
| 出版日期 | 2006 |
| 卷号 | 6期号:5页码:617 |
| ISSN号 | 1009-9271 |
| 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. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/42183]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.景德镇陶瓷大学 2.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | XiaoMa Gu,ShuHua Zhong,HongFei Liang,et al. derivationofthespiralmotionofaneruptiveprominenceanditsexplanation[J]. chinesejournalofastronomyandastrophysics,2006,6(5):617. |
| APA | XiaoMa Gu,ShuHua Zhong,HongFei Liang,&LaSheng Zhan.(2006).derivationofthespiralmotionofaneruptiveprominenceanditsexplanation.chinesejournalofastronomyandastrophysics,6(5),617. |
| MLA | XiaoMa Gu,et al."derivationofthespiralmotionofaneruptiveprominenceanditsexplanation".chinesejournalofastronomyandastrophysics 6.5(2006):617. |
入库方式： OAI收割
来源：国家天文台
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