RELATIONSHIP BETWEEN DISTRIBUTION OF MAGNETIC DECAY INDEX AND FILAMENT ERUPTIONS
文献类型：期刊论文
| 作者 | Li HB(李洪波)1,3
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-10-20 |
| 卷号 | 830期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Sun: Activity Sun: Magnetic Fields Sun: Filaments Prominences |
| DOI | 10.3847/0004-637X/830/2/132 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | The decay index n of a horizontal magnetic field is considered to be an important parameter in judging the stability of a flux rope. However, the spatial distribution of this parameter has not been extensively explored so far. In this paper, we present a delineative study of the three-dimensional maps of n for two eruptive events, in which filaments underwent asymmetrical eruptions. The corresponding n-distributions are both found to show that the filaments tend to erupt at abnormal regions (dubbed ABN regions) of n. These ABN regions appear to be divided into two subregions, with larger and smaller n. Moreover, an analysis of the magnetic topological configuration of the ABN regions has been also performed. The results indicate that these ABN regions are associated with a kind of special quasi-separatrix layer across which the connectivity of magnetic field is discontinuous. The presented observations and analyses strongly suggest that the torus instability in ABN regions may play a crucial role for the triggering of an asymmetrical eruption. Additionally, our investigation can provide a way of forecasting how a filament might erupt, and predicting the location for an asymmetrically eruptive filament to be split through analyzing the spatial structure of n. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| WOS关键词 | CORONAL MASS EJECTIONS ; SOLAR ERUPTIONS ; FIELDS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000400471400001 |
| 资助机构 | National Scientific Foundation of China (NSFC)(11073050, 11533009) ; Key Laboratory of Geospace Environment, CAS, University of Science & Technology of China ; King Saud University ; Chinese Academy of Sciences(2012Y1JA0002) |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9849]  |
| 专题 | 云南天文台_选址与日冕观测组 |
| 作者单位 | 1.Graduate School of Chinese Academy of Science, Beijing 100049, China 2.Department of Physics and Astronomy, King Saud University, P.O. Box 2455, 11451, Saudi Arabia 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China |
| 推荐引用方式 GB/T 7714 | Li HB. RELATIONSHIP BETWEEN DISTRIBUTION OF MAGNETIC DECAY INDEX AND FILAMENT ERUPTIONS[J]. ASTROPHYSICAL JOURNAL,2016,830(2). |
| APA | Li HB.(2016).RELATIONSHIP BETWEEN DISTRIBUTION OF MAGNETIC DECAY INDEX AND FILAMENT ERUPTIONS.ASTROPHYSICAL JOURNAL,830(2). |
| MLA | Li HB."RELATIONSHIP BETWEEN DISTRIBUTION OF MAGNETIC DECAY INDEX AND FILAMENT ERUPTIONS".ASTROPHYSICAL JOURNAL 830.2(2016). |
入库方式： OAI收割
来源：云南天文台
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