Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud

doi:10.3847/2041-8213/ab108c

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	Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud
	Guo, Jianpeng 2,3,4,5; Wang, Zehao 3,6; Feng, Xueshang 3; Li, Bo 1; Shi, Mijie 1; Huang, Hui 2; Lin, Haibo 2; Yang, Lei 3,7; Liu, Chaoxu 3; Zhong, Jiayong 2
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2019-04-01
卷号	874 期号:2 页码:8
关键词	magnetohydrodynamics (MHD) solar wind waves
ISSN号	2041-8205
DOI	10.3847/2041-8213/ab108c
英文摘要	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.
资助项目	National Natural Science Foundation of China (NSFC)[41674147] ; National Natural Science Foundation of China (NSFC)[41731067] ; National Natural Science Foundation of China (NSFC)[41531073] ; Fundamental Research Funds for the Central Universities[2017NT13] ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201802] ; Specialized Research Fund for State Key Laboratories ; NSFC[41674172] ; NSFC[11761141002]
WOS关键词	PROPAGATION ; LOOP
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000463138900001
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Collaborating Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; NSFC ; NSFC
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/25696]
专题	中国科学院国家天文台
通讯作者	Feng, Xueshang
作者单位	1.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Inst Space Sci, Weihai 264209, Peoples R China 2.Beijing Normal Univ, Dept Astron, Planetary & Space Phys Grp, Beijing 100875, Peoples R China 3.Chinese Acad Sci, SIGMA Weather Grp, State Key Lab Space Weather, NSSC, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 7.Chinese Acad Sci, CAS Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China
推荐引用方式 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):8.
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),8.
MLA	Guo, Jianpeng,et al."Possible Detection of Torsional Alfven Waves within an Interplanetary Magnetic Cloud".ASTROPHYSICAL JOURNAL LETTERS 874.2(2019):8.