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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; Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2013-08-20
卷号773期号:2页码:33-
DOI10.1088/2041-8205/773/2/L33
产权排序第1完成单位
收录类别SCI
关键词Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Oscillations
摘要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.
项目资助者NSFC [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
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
URL查看原文
归档日期2013-08-09
WOS记录号WOS:000322899600016
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTION ; GLOBAL EUV WAVE ; SOLAR CORONA ; EIT WAVES ; MORETON WAVES ; SOHO/EIT OBSERVATIONS ; SDO/AIA OBSERVATIONS ; MAGNETOSONIC WAVES ; STEREO ; FLARE
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被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7190
专题选址与日冕观测组
通讯作者Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
作者单位1.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
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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.,...&Shen, YD .(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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