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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)
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-05
Volume431Issue:2Pages:1359-1365
DOI10.1093/mnras/stt258
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Corona Sun: Oscillations
Abstract

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.

Funding ProjectNatural Science Foundation of China[10973038] ; Natural Science Foundation of China[11173058] ; Natural Science Foundation of China[11273056] ; Chinese Academy of Sciences (CAS)[KJCX2-EW-T07]
Funding OrganizationNatural Science Foundation of China[10973038, 11173058, 11273056] ; Chinese Academy of Sciences (CAS)[KJCX2-EW-T07]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
Archive Date2013-04-16
WOS IDWOS:000318345200028
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTION ; EIT WAVES ; SOLAR CORONA ; MAGNETOHYDRODYNAMIC WAVES ; PROPAGATING DISTURBANCE ; TRANSVERSE OSCILLATIONS ; SOHO/EIT OBSERVATIONS ; NUMERICAL-SIMULATION ; MORETON WAVES ; KINK-MODE
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6233
Collection太阳物理研究组
Corresponding AuthorZheng RS(郑瑞生)
AffiliationNational Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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.
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