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EVIDENCE FOR THE WAVE NATURE OF AN EXTREME ULTRAVIOLET WAVE OBSERVED BY THE ATMOSPHERIC IMAGING ASSEMBLY ON BOARD THE SOLAR DYNAMICS OBSERVATORY
Shen YD(申远灯)1,2; Liu Y(刘煜)1; Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2012-07-20
卷号754期号:1
DOI10.1088/0004-637X/754/1/7
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: Magnetic Topology Sun: Oscillations
摘要Extreme-ultraviolet (EUV) waves have been found for about 15 years. However, significant controversy remains over their physical natures and origins. In this paper, we report an EUV wave that was accompanied by an X1.9 flare and a partial halo coronal mass ejection (CME). Using high temporal and spatial resolution observations taken by the Solar Dynamics Observatory and the Solar-TErrestrial RElations Observatory, we are able to investigate the detailed kinematics of the EUV wave. We find several arguments that support the fast-mode wave scenario. (1) The speed of the EUV wave (570 km s(-1)) is higher than the sound speed of the quiet-Sun corona. (2) Significant deceleration of the EUV wave (-130 m s(-2)) is found during its propagation. (3) The EUV wave resulted in the oscillations of a loop and a filament along its propagation path, and a reflected wave from the polar coronal hole is also detected. (4) Refraction or reflection effect is observed when the EUV wave was passing through two coronal bright points. (5) The dimming region behind the wavefront stopped to expand when the wavefront started to become diffuse. (6) The profiles of the wavefront exhibited a dispersive nature, and the magnetosonic Mach number of the EUV wave derived from the highest intensity jump is about 1.4. In addition, triangulation indicates that the EUV wave propagated within a height range of about 60-100 Mm above the photosphere. We propose that the EUV wave observed should be a nonlinear fast-mode magnetosonic wave that propagated freely in the corona after it was driven by the CME expanding flanks during the initial period.
项目资助者Natural Science Foundation of China [10933003, 11078004, 11073050] ; National Key Research Science Foundation [2011CB811400]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2012-07-02
WOS记录号WOS:000306111800007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTION ; X-RAY OBSERVATIONS ; I 10830 ANGSTROM ; H-ALPHA MORETON ; EIT WAVES ; EUV WAVE ; FLARE WAVES ; PROPAGATING DISTURBANCE ; QUADRATURE OBSERVATIONS ; SOHO/EIT OBSERVATIONS
引用统计
被引频次:31[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/114a53/7181
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.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Shen YD,Liu Y,Shen, YD . EVIDENCE FOR THE WAVE NATURE OF AN EXTREME ULTRAVIOLET WAVE OBSERVED BY THE ATMOSPHERIC IMAGING ASSEMBLY ON BOARD THE SOLAR DYNAMICS OBSERVATORY[J]. ASTROPHYSICAL JOURNAL,2012,754(1).
APA Shen YD,Liu Y,&Shen, YD .(2012).EVIDENCE FOR THE WAVE NATURE OF AN EXTREME ULTRAVIOLET WAVE OBSERVED BY THE ATMOSPHERIC IMAGING ASSEMBLY ON BOARD THE SOLAR DYNAMICS OBSERVATORY.ASTROPHYSICAL JOURNAL,754(1).
MLA Shen YD,et al."EVIDENCE FOR THE WAVE NATURE OF AN EXTREME ULTRAVIOLET WAVE OBSERVED BY THE ATMOSPHERIC IMAGING ASSEMBLY ON BOARD THE SOLAR DYNAMICS OBSERVATORY".ASTROPHYSICAL JOURNAL 754.1(2012).
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