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SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA
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 LETTERS
2012-06-20
卷号752期号:2
DOI10.1088/2041-8205/752/2/L23
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Chromosphere Sun: Corona Sun: Flares Sun: Transition Region
摘要For the first time, we report a large-scale wave that was observed simultaneously in the photosphere, chromosphere, transition region, and low corona layers of the solar atmosphere. Using the high temporal and high spatial resolution observations taken by the Solar Magnetic Activity Research Telescope at Hida Observatory and the Atmospheric Imaging Assembly (AIA) on board Solar Dynamic Observatory, we find that the wave evolved synchronously at different heights of the solar atmosphere, and it propagated at a speed of 605 km s(-1) and showed a significant deceleration (-424 ms(-2)) in the extreme-ultraviolet (EUV) observations. During the initial stage, the wave speed in the EUVobservations was 1000 km s(-1), similar to those measured from the AIA 1700 angstrom (967 km s(-1)) and 1600 angstrom (893 km s(-1)) observations. The wave was reflected by a remote region with open fields, and a slower wave-like feature at a speed of 220 km s(-1) was also identified following the primary fast wave. In addition, a type-II radio burst was observed to be associated with the wave. We conclude that this wave should be a fast magnetosonic shock wave, which was first driven by the associated coronal mass ejection and then propagated freely in the corona. As the shock wave propagated, its legs swept the solar surface and thereby resulted in the wave signatures observed in the lower layers of the solar atmosphere. The slower wave-like structure following the primary wave was probably caused by the reconfiguration of the low coronal magnetic fields, as predicted in the field-line stretching model.
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
ISSN2041-8205
URL查看原文
归档日期2012-07-02
WOS记录号WOS:000305461600006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTREME-ULTRAVIOLET WAVE ; X-RAY OBSERVATIONS ; I 10830 ANGSTROM ; H-ALPHA MORETON ; 2006 DECEMBER 6 ; EIT WAVES ; EUV WAVE ; NUMERICAL-SIMULATION ; IMAGING TELESCOPE ; MASS EJECTION
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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/114a53/7184
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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Shen YD,Liu Y,Shen, YD . SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,752(2).
APA Shen YD,Liu Y,&Shen, YD .(2012).SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA.ASTROPHYSICAL JOURNAL LETTERS,752(2).
MLA Shen YD,et al."SIMULTANEOUS OBSERVATIONS OF A LARGE-SCALE WAVE EVENT IN THE SOLAR ATMOSPHERE: FROM PHOTOSPHERE TO CORONA".ASTROPHYSICAL JOURNAL LETTERS 752.2(2012).
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