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Loop oscillations and an extreme ultraviolet wave associated with a micro-sigmoid eruption
Zheng RS(郑瑞生); Jiang YC(姜云春); Yang JY(杨家艳); Hong JC(洪俊超); Bi Y(毕以); Yang B(杨波); Yang D(杨丹); Zheng, RS (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-05
卷号431期号:2页码:1359-1365
DOI10.1093/mnras/stt258
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Oscillations
摘要Taking advantage of the high temporal and spatial resolution observations of the Solar Dynamics Observatory, we present an extreme ultraviolet (EUV) wave associated with a micro-sigmoid eruption, which took place on 2012 October 4. The micro-sigmoid underwent a typical sigmoid-to-arcade evolution via tether-cutting reconnection, accompanied by a micro-flare, a filament eruption. The twin coronal dimmings at the footpoints of the sigmoid indicate the existence of the associated micro-coronal mass ejection that likely triggered a small-scale EUV wave. The wave onset was nearly simultaneous with the start of the eruption and the associated flare. The wave had a nearly circular front, and propagated at initial velocities of 300-360 km s(-1). Because the sigmoid was located in the non-quiet region, the generated wave interacted with the ambient loops, and triggered transverse loop oscillations, resulting in many loop-shaped dimmings. Moreover, the interaction between the wave and one large loop led not only to the oscillation but also to the downward plasma flow along the loop, inducing loop footpoints to brighten. Another small loop was nearly intact after the wave passed. In some directions, the wave was refracted by the loops, and the refracted speeds increased, decreased, or vanished in different directions. All results provide evidence that the EUV wave was a fast-mode magnetohydrodynamic wave.
项目资助者Natural Science Foundation of China [10973038, 11173058, 11273056] ; Chinese Academy of Sciences (CAS) [KJCX2-EW-T07]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
归档日期2013-04-16
WOS记录号WOS:000318345200028
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTION ; EIT WAVES ; SOLAR CORONA ; MAGNETOHYDRODYNAMIC WAVES ; PROPAGATING DISTURBANCE ; TRANSVERSE OSCILLATIONS ; SOHO/EIT OBSERVATIONS ; NUMERICAL-SIMULATION ; MORETON WAVES ; KINK-MODE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6233
专题太阳物理研究组
通讯作者Zheng, RS (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
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GB/T 7714
Zheng RS,Jiang YC,Yang JY,et al. Loop oscillations and an extreme ultraviolet wave associated with a micro-sigmoid eruption[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,431(2):1359-1365.
APA Zheng RS.,Jiang YC.,Yang JY.,Hong JC.,Bi Y.,...&Zheng, RS .(2013).Loop oscillations and an extreme ultraviolet wave associated with a micro-sigmoid eruption.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,431(2),1359-1365.
MLA Zheng RS,et al."Loop oscillations and an extreme ultraviolet wave associated with a micro-sigmoid eruption".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 431.2(2013):1359-1365.
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