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DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS
Shen YD(申远灯)1,2,3,4; Liu Y(刘煜)1,3,4; Su, JT3; Li, H4; Zhao RJ(赵瑞娟)1; Tian ZJ(田占军)1; Ichimoto, K2; Shibata, K2
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2013-08-20
Volume773Issue:2Pages:33-
DOI10.1088/2041-8205/773/2/L33
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Oscillations
Abstract

We present observations of the diffraction, refraction, and reflection of a global extreme-ultraviolet (EUV) wave propagating in the solar corona. These intriguing phenomena are observed when the wave interacts with two remote active regions, and together they exhibit properties of an EUV wave. When the wave approached AR11465, it became weaker and finally disappeared in the active region, but a few minutes later a new wavefront appeared behind the active region, and it was not concentric with the incoming wave. In addition, a reflected wave was also simultaneously observed on the wave incoming side. When the wave approached AR11459, it transmitted through the active region directly and without reflection. The formation of the new wavefront and the transmission could be explained with diffraction and refraction effects, respectively. We propose that the different behaviors observed during the interactions may be caused by different speed gradients at the boundaries of the two active regions. We find that the EUV wave formed ahead of a group of expanding loops a few minutes after the start of the loops' expansion, which represents the initiation of the associated coronal mass ejection (CME). Based on these results, we conclude that the EUV wave should be a nonlinear magnetosonic wave or shock driven by the associated CME, which propagated faster than the ambient fast mode speed and gradually slowed down to an ordinary linear wave. Our observations support the hybrid model that includes both fast wave and slow non-wave components.

Funding ProjectNSFC[1093303] ; NSFC[11078004] ; NSFC[11073050] ; 973 Program[2011CB811400] ; CAS[KJCX2-EW-T07] ; CAS[2012Y1JA0002] ; Key Laboratory of Solar Activity[KLSA201204] ; Key Laboratory of Solar Activity[KLSA201219] ; Key Laboratory of Dark Matter and Space Astronomy of CAS[DMS2012KT008] ; Western Light Youth Project
Funding OrganizationNSFC[1093303, 11078004, 11073050] ; 973 Program[2011CB811400] ; CAS[KJCX2-EW-T07, 2012Y1JA0002] ; Key Laboratory of Solar Activity[KLSA201204, KLSA201219] ; Key Laboratory of Dark Matter and Space Astronomy of CAS[DMS2012KT008] ; Western Light Youth Project
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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
Archive Date2013-08-09
WOS IDWOS:000322899600016
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTION ; GLOBAL EUV WAVE ; SOLAR CORONA ; EIT WAVES ; MORETON WAVES ; SOHO/EIT OBSERVATIONS ; SDO/AIA OBSERVATIONS ; MAGNETOSONIC WAVES ; STEREO ; FLARE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7190
Collection选址与日冕观测组
Corresponding AuthorShen YD(申远灯)
Affiliation1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Kwasan and Hida Observatories, Kyoto University, Kyoto 6078471, Japan
3.Key Laboratory of Solar Activity, Chinese Academy of Sciences, Beijing 100012, China
4.Key Laboratory of Dark Matter and Space Astronomy, Chinese Academy of Sciences, Nanjing 210008, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shen YD,Liu Y,Su, JT,et al. DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,773(2):33-.
APA Shen YD.,Liu Y.,Su, JT.,Li, H.,Zhao RJ.,...&Shibata, K.(2013).DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS.ASTROPHYSICAL JOURNAL LETTERS,773(2),33-.
MLA Shen YD,et al."DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS".ASTROPHYSICAL JOURNAL LETTERS 773.2(2013):33-.
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