Double-peaked core field of flux ropes during magnetic reconnection
文献类型：期刊论文
| 作者 | Liu, Chaoxu; Feng, Xueshang; Nakamura, Rumi; Guo, Jianpeng; Wang, Rongsheng |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 122期号:6页码:6374-6384 |
| 关键词 | flux rope core field Hall MHD |
| ISSN号 | 2169-9380 |
| 通讯作者 | Feng, XS (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China. |
| 英文摘要 | A flux rope event observed in the magnetotail exhibits a double-peaked core field feature. The generation of such double-peaked feature within the flux rope is explored with Hall-MHD simulations and theoretical analysis based on multiple X line reconnection. Simulations with a guide field produce flux ropes bounded by two active X lines in the thin current sheet. The guide field, combined with Hall-generated field, leads to a donut-shaped core field (having a double-peaked profile) near the magnetic separatrix. Subsequently, it rotates into the central region of the flux rope, which tends to be the force-free configuration. The analysis shows that there are three major factors affecting the evolution of the core field, including the guide field, convective, and Hall terms originating from the generalized Ohm's law. The convective term can become stronger near the central region of flux rope, and the Hall term dominates the region next to the separatrix during the early stages of the flux rope evolution. It implies that several different factors contribute to the generation of the double-peaked core field. The results may help explain a variety of core fields available in magnetotail flux ropes. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/6016]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Liu, Chaoxu,Feng, Xueshang,Nakamura, Rumi,et al. Double-peaked core field of flux ropes during magnetic reconnection[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(6):6374-6384. |
| APA | Liu, Chaoxu,Feng, Xueshang,Nakamura, Rumi,Guo, Jianpeng,&Wang, Rongsheng.(2017).Double-peaked core field of flux ropes during magnetic reconnection.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(6),6374-6384. |
| MLA | Liu, Chaoxu,et al."Double-peaked core field of flux ropes during magnetic reconnection".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.6(2017):6374-6384. |
入库方式： OAI收割
来源：国家空间科学中心
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