Loop oscillations and an extreme ultraviolet wave associated with a micro-sigmoid eruption

	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)
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2013-05
卷号	431 期号:2 页码:1359-1365
关键词	Sun: activity Sun: corona Sun: oscillations
ISSN号	0035-8711
通讯作者	Zheng, RS (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	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
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/431/2/1359
语种	英语
WOS记录号	WOS:000318345200028
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6233]
专题	云南天文台_太阳物理研究组
作者单位	National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式 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.,...&Yang D.(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.