| Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud | |
| Guo, Jianpeng; Wang, Zehao; Feng, Xueshang; Li, Bo; Shi, Mijie; Huang, Hui; Lin, Haibo; Yang, Lei; Liu, Chaoxu; Zhong, Jiayong; Wei, Yong; Yan, Yihua; Wan, Weixing | |
| Department | 空间科学部 |
| Source Publication | ASTROPHYSICAL JOURNAL LETTERS
 |
| 2019 | |
| Volume | 874Issue:2Pages:L19 |
| DOI | 10.3847/2041-8213/ab108c |
| ISSN | 2041-8205 |
| Language | 英语 |
| Keyword | magnetohydrodynamics (MHD) solar wind waves |
| Abstract | Although it is believed that Alfven waves can be present in the form of torsional modes in interplanetary magnetic flux ropes, convincing observational evidence remains elusive. In this Letter, we report the detection of Alfven waves embedded within an interplanetary magnetic cloud (MC) on 2003 March 20, which exhibited features quite different from those upstream and downstream. The magnetic field inside the MC underwent alternate rotations along an arc through a relatively small angle in the plane perpendicular to the minimum variance direction, which seems consistent with the appearance of torsional modes. A significant poloidal motion of plasma existed in the MC, thus it is possible that the field-aligned helical plasma flow was mixed with Alfven waves exhibiting high correlation between plasma velocity and the magnetic field. |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/6979 |
| Collection | 空间科学部 |
| Recommended Citation GB/T 7714 | Guo, Jianpeng,Wang, Zehao,Feng, Xueshang,et al. Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,874(2):L19. |
| APA | Guo, Jianpeng.,Wang, Zehao.,Feng, Xueshang.,Li, Bo.,Shi, Mijie.,...&Wan, Weixing.(2019).Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud.ASTROPHYSICAL JOURNAL LETTERS,874(2),L19. |
| MLA | Guo, Jianpeng,et al."Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud".ASTROPHYSICAL JOURNAL LETTERS 874.2(2019):L19. |
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| File Name/Size | DocType | Version | Access | License | ||
| 2019ApJL874L19.pdf（1810KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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