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On a Small-scale EUV Wave: The Driving Mechanism and the Associated Ascillating Filament
Shen YD(申远灯)1,2,3; Liu Y(刘煜)1,3; Tian ZJ(田占军)1; Qu, Zhining4
发表期刊ASTROPHYSICAL JOURNAL
2017-12-20
卷号851期号:2
DOI10.3847/1538-4357/aa9af0
产权排序第1完成单位
收录类别SCI
关键词Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Magnetic Fields Sun: Oscillations Sun: Filaments Prominences
摘要

We present observations of a small-scale extreme-ultraviolet (EUV) wave that was associated with a mini-filament eruption and a GOES B1.9 micro-flare in the quiet-Sun region. The initiation of the event was due to the photospheric magnetic emergence and cancellation in the eruption source region, which first caused the ejection of a small plasma ejecta, then the ejecta impacted a nearby mini-filament and thereby led to the filament's eruption and the associated flare. During the filament eruption, an EUV wave at a speed of 182-317 km s(-1) was formed ahead of an expanding coronal loop, which propagated faster than the expanding loop and showed obvious deceleration and reflection during the propagation. In addition, the EUV wave further resulted in the transverse oscillation of a remote filament whose period and damping time are 15 and 60 minutes, respectively. Based on the observational results, we propose that the small-scale EUV wave should be a fast-mode magnetosonic wave that was driven by the expanding coronal loop. Moreover, with the application of filament seismology, it is estimated that the radial magnetic field strength is about 7 Gauss. The observations also suggest that small-scale EUV waves associated with miniature solar eruptions share similar driving mechanisms and observational characteristics with their large-scale counterparts.

项目资助者Natural Science Foundation of China(11403097, 11633008, 11773068) ; Yunnan Science Foundation(2015FB191, 2017FB006) ; Specialized Research Fund for State Key Laboratories ; Youth Innovation Promotion Association of Chinese Academy of Sciences(2014047) ; Sichuan University of Science and Engineering(2015RC43)
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
ISSN0004-637X
URL查看原文
WOS记录号WOS:000418350300004
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Coronal Mass Ejection ; Extreme-ultraviolet Wave ; Solar-flare Waves ; Eit Waves ; Moreton Wave ; Quadrature Observations ; Winking Filaments ; Magnetic-fields ; Shock-wave ; Stereo
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12086
专题选址与日冕观测组
通讯作者Shen YD(申远灯)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China
2.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, China
4.School of Physics and Electronic Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
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Shen YD,Liu Y,Tian ZJ,et al. On a Small-scale EUV Wave: The Driving Mechanism and the Associated Ascillating Filament[J]. ASTROPHYSICAL JOURNAL,2017,851(2).
APA Shen YD,Liu Y,Tian ZJ,&Qu, Zhining.(2017).On a Small-scale EUV Wave: The Driving Mechanism and the Associated Ascillating Filament.ASTROPHYSICAL JOURNAL,851(2).
MLA Shen YD,et al."On a Small-scale EUV Wave: The Driving Mechanism and the Associated Ascillating Filament".ASTROPHYSICAL JOURNAL 851.2(2017).
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