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题名:
On a Small-scale EUV Wave: The Driving Mechanism and the Associated Ascillating Filament
作者: Shen YD(申远灯)1,2,3; Liu Y(刘煜)1,3; Tian ZJ(田占军)1; Qu, Zhining4
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2017-12-20
卷号: 851, 期号:2
DOI: 10.3847/1538-4357/aa9af0
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Shen, Yuandeng(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
关键词: Sun: coronal mass ejections (CMEs) ; Sun: filaments, prominences ; Sun: flares ; Sun: magnetic fields ; Sun: oscillations
英文摘要: 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
原文出处: 查看原文
ISSN号: 0004-637X
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: 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
WOS记录号: WOS:000418350300004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/12086
Appears in Collections:选址与日冕观测组_期刊论文

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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

Recommended Citation:
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).
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