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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 PublicationASTROPHYSICAL JOURNAL LETTERS
2019
Volume874Issue:2Pages:L19
DOI10.3847/2041-8213/ab108c
ISSN2041-8205
Language英语
Keywordmagnetohydrodynamics (MHD) solar wind waves
AbstractAlthough 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.
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Document Type期刊论文
Identifierhttp://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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