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EUV Waves Driven by the Sudden Expansion of Transequatorial Loops Caused by Coronal Jets
Shen YD(申远灯)1,2,3,4; Tang, Zehao1,5; Miao YH(苗玉虎)1,5; Su, Jiangtao3,5; Liu Y(刘煜)1; Shen YD(申远灯), Email: ydshen@ynao.ac.cn
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2018-06-10
卷号860期号:1
DOI10.3847/2041-8213/aac8dd
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Flares Sun: Oscillations
摘要We present two events to study the driving mechanism of extreme-ultraviolet (EUV) waves that are not associated with coronal mass ejections (CMEs), by using high-resolution observations taken by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. Observational results indicate that the observed EUV waves were accompanied by flares and coronal jets, but not the CMEs that were regarded as drivers of most EUV waves in previous studies. In the first case, it is observed that a coronal jet is ejected along a transequatorial loop system at a plane-of-the-sky (POS) speed of 335 +/- 22 km s(-1); in the meantime, an arc-shaped EUV wave appeared on the eastern side of the loop system. In addition, the EUV wave further interacted with another interconnecting loop system and launched a fast propagating (QFP) magnetosonic wave along the loop system, which had a period of 200 s and a speed of 388 +/- 65 km s(-1), respectively. In the second case, we observed a coronal jet that ejected at a POS speed of 282 +/- 44 km s(-1) along a transequatorial loop system as well as the generation of bright EUV waves on the eastern side of the loop system. Based on the observational results, we propose that the observed EUV waves on the eastern side of the transequatorial loop systems are fast-mode magnetosonic waves and that they are driven by the sudden lateral expansion of the transequatorial loop systems due to the direct impingement of the associated coronal jets, while the QFP wave in the fist case formed due to the dispersive evolution of the disturbance caused by the interaction between the EUV wave and the interconnecting coronal loops. It is noted that EUV waves driven by sudden loop expansions have shorter lifetimes than those driven by CMEs.
项目资助者Natural Science Foundation of China(11773068, 11633008, 11403097, 11503084, 11773038) ; Yunnan Science Foundation(2015FB191, 2017FB006) ; Specialized Research Fund for State Key Laboratories ; Open Research Program of CAS Key Laboratory of Solar Activity(KLSA201813) ; Youth Innovation Promotion Association of Chinese Academy of Sciences(2014047)
语种英语
学科领域天文学
文章类型Article
ISSN2041-8205
URL查看原文
WOS记录号WOS:000434981500002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]H-ALPHA SURGES ; X-RAY JETS ; EXTREME-ULTRAVIOLET WAVE ; 2006 DECEMBER 6 ; SOLAR CORONA ; ALFVEN WAVES ; EIT WAVES ; TRANSVERSE OSCILLATIONS ; NUMERICAL EXPERIMENTS ; FILAMENT ERUPTIONS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12399
专题选址与日冕观测组
通讯作者Shen YD(申远灯), Email: ydshen@ynao.ac.cn
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, People's Republic of China
2.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China
5.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Shen YD,Tang, Zehao,Miao YH,et al. EUV Waves Driven by the Sudden Expansion of Transequatorial Loops Caused by Coronal Jets[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,860(1).
APA Shen YD,Tang, Zehao,Miao YH,Su, Jiangtao,Liu Y,&Shen YD.(2018).EUV Waves Driven by the Sudden Expansion of Transequatorial Loops Caused by Coronal Jets.ASTROPHYSICAL JOURNAL LETTERS,860(1).
MLA Shen YD,et al."EUV Waves Driven by the Sudden Expansion of Transequatorial Loops Caused by Coronal Jets".ASTROPHYSICAL JOURNAL LETTERS 860.1(2018).
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