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Deformation and deceleration of coronal wave
Xue ZK(薛志科)1,3; Qu ZQ(屈中权)1; Yan XL(闫晓理)1,2; Zhao, L4; Ma L(马琳)1,3
Source PublicationASTRONOMY & ASTROPHYSICS
2013-08
Volume556Pages:152-158
DOI10.1051/0004-6361/201220731
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordSun: Activity Sun: Corona Sun: Magnetic Topology Waves
Abstract

Aims. We studied the kinematics and morphology of two coronal waves to better understand the nature and origin of coronal waves. 

Methods. Using multi-wavelength observations of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) and the Extreme Ultraviolet Imager (EUVI) on board the twin spacecraft Solar-TErrestrial RElations Observatory (STEREO), we present morphological and dynamic characteristics of consecutive coronal waves on 2011 March 24. We also show the coronal magnetic field based on the potential field source surface model. 

Results. This event contains several interesting aspects. The first coronal wave initially appeared after a surge-like eruption. Its front was changed and deformed significantly from a convex shape to a line-shaped appearance, and then to a concave configuration during its propagation to the northwest. The initial speeds ranged from 947 km s(-1) to 560 km s(-1). The first wave decelerated significantly after it passed through a filament channel. After the deceleration, the final propagation speeds of the wave were from 430 km s(-1) to 312 km s(-1). The second wave was found to appear after the first wave in the northwest side of the filament channel. Its wave front was more diffused and the speed was around 250 km s(-1), much slower than that of the first wave. 

Conclusions. The deformation of the first coronal wave was caused by the different speeds along different paths. The sudden deceleration implies that the refraction of the first wave took place at the boundary of the filament channel. The event provides evidence that the first coronal wave may be a coronal MHD shock wave, and the second wave may be the apparent propagation of the brightenings caused by successive stretching of the magnetic field lines.

Funding ProjectNational Science Foundation of China (NSFC)[10903027] ; National Science Foundation of China (NSFC)[11078005] ; National Science Foundation of China (NSFC)[10943002] ; National Science Foundation of China (NSFC)[11103075] ; Key Laboratory of Solar Activity of CAS[KLSA201303] ; China's 973 project[G2011CB811400]
Funding OrganizationNational Science Foundation of China (NSFC)[10903027, 11078005, 10943002, 11103075] ; Key Laboratory of Solar Activity of CAS[KLSA201303] ; China's 973 project[G2011CB811400]
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
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
Archive Date2013-09-24
WOS IDWOS:000323893500152
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTREME-ULTRAVIOLET WAVE ; GLOBAL EUV WAVE ; EIT WAVES ; MASS EJECTION ; MORETON WAVES ; SOLAR CORONA ; PROPAGATING DISTURBANCE ; QUADRATURE OBSERVATIONS ; SOHO/EIT OBSERVATIONS ; NUMERICAL-SIMULATION
EI Accession Number20134716996676
EI KeywordsMagnetohydrodynamics
EI Classification Number615.3Magnetohydrodynamics (MHD) Power Generation - 931Classical Physics ; Quantum Theory ; Relativity
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6226
Collection太阳物理研究组
Corresponding AuthorXue ZK(薛志科)
Affiliation1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650011 Yunnan, PR China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, 100012 Beijing, PR China
3.University of Chinese Academy of Sciences, 100049 Beijing, PR China c
4.Yunnan Normal University, 650092 Kunming Yunnan, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xue ZK,Qu ZQ,Yan XL,et al. Deformation and deceleration of coronal wave[J]. ASTRONOMY & ASTROPHYSICS,2013,556:152-158.
APA Xue ZK,Qu ZQ,Yan XL,Zhao, L,&Ma L.(2013).Deformation and deceleration of coronal wave.ASTRONOMY & ASTROPHYSICS,556,152-158.
MLA Xue ZK,et al."Deformation and deceleration of coronal wave".ASTRONOMY & ASTROPHYSICS 556(2013):152-158.
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