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Propagation Characteristics of Two Coronal Mass Ejections from the Sun Far into Interplanetary Space
Zhao, Xiaowei; Liu, Ying D.; Hu, Huidong; Wang, Rui; Liu, YD (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Liu, YD (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
作者部门空间科学部
发表期刊ASTROPHYSICAL JOURNAL
2017
卷号837期号:1页码:4
ISSN0004-637X
语种英语
关键词Shock Waves Solar Wind Sun: Coronal Mass Ejections (Cmes) Sun: Heliosphere Sun: Radio Radiation
摘要Propagation of coronal mass ejections (CMEs) from the Sun far into interplanetary space is not well understood, due to limited observations. In this study we examine the propagation characteristics of two geo-effective CMEs, which occurred on 2005 May 6 and 13, respectively. Significant heliospheric consequences associated with the two CMEs are observed, including interplanetary CMEs (ICMEs) at the Earth and Ulysses, interplanetary shocks, a long-duration type II radio burst, and intense geomagnetic storms. We use coronagraph observations from SOHO/LASCO, frequency drift of the long-duration type II burst, in situ measurements at the Earth and Ulysses, and magnetohydrodynamic propagation of the observed solar wind disturbances at 1 au to track the CMEs from the Sun far into interplanetary space. We find that both of the CMEs underwent a major deceleration within 1 au and thereafter a gradual deceleration when they propagated from the Earth to deep interplanetary space, due to interactions with the ambient solar wind. The results also reveal that the two CMEs interacted with each other in the distant interplanetary space even though their launch times on the Sun were well separated. The intense geomagnetic storm for each case was caused by the southward magnetic fields ahead of the CME, stressing the critical role of the sheath region in geomagnetic storm generation, although for the first case there is a corotating interaction region involved.
收录类别SCI
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/5984
专题空间科学部
通讯作者Liu, YD (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.; Liu, YD (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
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GB/T 7714
Zhao, Xiaowei,Liu, Ying D.,Hu, Huidong,et al. Propagation Characteristics of Two Coronal Mass Ejections from the Sun Far into Interplanetary Space[J]. ASTROPHYSICAL JOURNAL,2017,837(1):4.
APA Zhao, Xiaowei,Liu, Ying D.,Hu, Huidong,Wang, Rui,Liu, YD ,&Liu, YD .(2017).Propagation Characteristics of Two Coronal Mass Ejections from the Sun Far into Interplanetary Space.ASTROPHYSICAL JOURNAL,837(1),4.
MLA Zhao, Xiaowei,et al."Propagation Characteristics of Two Coronal Mass Ejections from the Sun Far into Interplanetary Space".ASTROPHYSICAL JOURNAL 837.1(2017):4.
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