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题名: Buildup of a highly twisted magnetic flux rope during a solar eruption
作者: Wang, Wensi; Liu, Rui; Wang, Yuming; Hu, Qiang; Shen, Chenglong; Jiang, Chaowei; Zhu, Chunming
作者部门: 空间科学部
通讯作者: Liu, R (reprint author), Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China. ; Liu, R (reprint author), Collaborat Innovat Ctr Astronaut Sci & Technol, Hefei 230026, Anhui, Peoples R China.
刊名: NATURE COMMUNICATIONS
ISSN号: 2041-1723
出版日期: 2017
卷号: 8, 页码:1330
收录类别: SCI
项目资助者: NSFC [41774150, 41474151, 41774178, 41574165, 41774181, 41421063] ; Thousand Young Talents Program of China ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-DQC015] ; fundamental research funds for the central universities
英文摘要: The magnetic flux rope is among the most fundamental magnetic configurations in plasma. Although its presence after solar eruptions has been verified by spacecraft measurements near Earth, its formation on the Sun remains elusive, yet is critical to understanding a broad spectrum of phenomena. Here we study the dynamic formation of a magnetic flux rope during a classic two-ribbon flare. Its feet are identified unambiguously with conjugate coronal dimmings completely enclosed by irregular bright rings, which originate and expand outward from the far ends of flare ribbons. The expansion is associated with the rapid ribbon separation during the flare main phase. Counting magnetic flux through the feet and the ribbon-swept area reveals that the rope's core is more twisted than its average of four turns. It propagates to the Earth as a typical magnetic cloud possessing a similar twist profile obtained by the Grad-Shafranov reconstruction of its three dimensional structure.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6140
Appears in Collections:空间科学部_期刊论文

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