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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); Bi Y(毕以); Hong JC(洪俊超); Yang D(杨丹); Yang B(杨波); Zheng, RS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2012-07-10
Volume753Issue:2Pages:29-35
DOI10.1088/2041-8205/753/2/L29
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Corona Sun: Filaments Prominences
AbstractTaking advantage of the high temporal and spatial resolution of the Solar Dynamics Observatory (SDO) observations, we present an extreme ultraviolet (EUV) wave associated with a micro-sigmoid eruption on 2010 October 21. The micro-sigmoid underwent a typical "sigmoid-to-arcade" evolution via tether-cutting reconnection, accompanied by a B1.7 flare, a filament eruption, and coronal twin dimmings. In the eruption, the newly formed sigmoidal loops expanded quickly, and the expansion likely triggered an 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 a constant velocity of 270-350 km s(-1) with very little angular dependence. Remarkably, in some direction, the wave encountered a small loop and refracted at a higher speed. All the results provide evidences that the wave was a fast-mode magnetohydrodynamic (MHD) wave. Owing to the close temporal and spatial relationship between the wave and the expanding loops, we believe that the wave was most likely triggered by the fast expansion of the newly formed sigmoidal loops, which evolved into the leading front of the invisible micro-coronal mass ejection.
Funding Organization973 Program [2011CB811403] ; Natural Science Foundation of China [10973038, 11173058, 11103090]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN2041-8205
URL查看原文
Archive Date2012-10-12
WOS IDWOS:000305902700004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTION ; EIT WAVES ; ACTIVE-REGION ; SOLAR CORONA ; PROPAGATING DISTURBANCE ; SOHO/EIT OBSERVATIONS ; NUMERICAL-SIMULATION ; MORETON WAVES ; YOHKOH SXT ; MHD WAVES
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6197
Collection太阳物理研究组
Corresponding AuthorZheng, RS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
AffiliationNational Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zheng RS,Jiang YC,Yang JY,et al. AN EXTREME ULTRAVIOLET WAVE ASSOCIATED WITH A MICRO-SIGMOID ERUPTION[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,753(2):29-35.
APA Zheng RS.,Jiang YC.,Yang JY.,Bi Y.,Hong JC.,...&Zheng, RS .(2012).AN EXTREME ULTRAVIOLET WAVE ASSOCIATED WITH A MICRO-SIGMOID ERUPTION.ASTROPHYSICAL JOURNAL LETTERS,753(2),29-35.
MLA Zheng RS,et al."AN EXTREME ULTRAVIOLET WAVE ASSOCIATED WITH A MICRO-SIGMOID ERUPTION".ASTROPHYSICAL JOURNAL LETTERS 753.2(2012):29-35.
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