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Variations of the Plasma Environment Revealed by the Evolution of the Supra-arcade Fan in the 2017 September 10 Flare
Cai, Qiangwei1,2; Ye J(叶景)3,4; Feng, Hengqiang1,2; Zhao, Guoqing1,2
发表期刊ASTROPHYSICAL JOURNAL
2022-04-01
卷号929期号:1
DOI10.3847/1538-4357/ac5fa4
产权排序第3完成单位
收录类别SCI
摘要

Based on observations from the Interface Region Imaging Spectrograph and Hinode, we analyze the thermodynamic evolution of the supra-arcade fan (SAF) in the 2017 September 10 flare. The SAF presents discontinuous characters during the rising process, indicating a nonuniform process of magnetic reconnection in the solar eruption. The intensity peaks of the high-temperature spectral lines (Fe xxi 1354.08 angstrom, Fe xxiii 263.76 angstrom, and Fe xxiv 255.10 angstrom) basically correspond to the valley of the Doppler velocity and Doppler width. The temperature and density increase spatially at the upper boundary of the SAF. These results indicate that a compressed interface may exist in the SAF, where the plasma environment shows remarkable changes in density, temperature, and turbulence. In view of the fact that the height of the SAF is close to the hard X-ray source, we conclude that the interface could be related to termination shocks (TSs), taking into account the synthetic spectral profiles obtained from numerical experiments. In turn, the variations of the spectral profiles might be useful tools for identifying TSs from EUV spectral observations.

资助项目Natural Science Foundation of Henan Province[212300410210] ; National Scientific Foundation of ChinaNational Natural Science Foundation of China (NSFC)[NSFC 41974197] ; National Scientific Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12073073] ; National Scientific Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11933009] ; National Scientific Foundation of ChinaNational Natural Science Foundation of China (NSFC)[41874204] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDA17040507] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[QYZDJ-SSWSLH012] ; Applied Basic Research of Yunnan Province[202101AT070018] ; Norwegian Space Center ; ESAEuropean Space Agency
项目资助者Natural Science Foundation of Henan Province[212300410210] ; National Scientific Foundation of ChinaNational Natural Science Foundation of China (NSFC)[NSFC 41974197, 12073073, 11933009, 41874204] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDA17040507, QYZDJ-SSWSLH012] ; Applied Basic Research of Yunnan Province[202101AT070018] ; Norwegian Space Center ; ESAEuropean Space Agency
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP Publishing Ltd
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000783319600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]X-RAY OBSERVATIONS ; SOLAR-FLARE ; TERMINATION SHOCK ; NONEQUILIBRIUM IONIZATION ; MAGNETIC RECONNECTION ; REGION ; TOP ; ACCELERATION ; MICROWAVE ; MOTIONS
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25050
专题太阳物理研究组
通讯作者Ye J(叶景)
作者单位1.Institute of Space Physics, Luoyang Normal University, Luoyang, 471934, People's Republic of China;
2.Henan Key Laboratory of Electromagnetic Transformation and Detection, Luoyang Normal University, Luoyang, 471934, Peoples Republic Of China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, People's Republic of China; yj@ynao.ac.cn;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China
通讯作者单位中国科学院云南天文台
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Cai, Qiangwei,Ye J,Feng, Hengqiang,et al. Variations of the Plasma Environment Revealed by the Evolution of the Supra-arcade Fan in the 2017 September 10 Flare[J]. ASTROPHYSICAL JOURNAL,2022,929(1).
APA Cai, Qiangwei,Ye J,Feng, Hengqiang,&Zhao, Guoqing.(2022).Variations of the Plasma Environment Revealed by the Evolution of the Supra-arcade Fan in the 2017 September 10 Flare.ASTROPHYSICAL JOURNAL,929(1).
MLA Cai, Qiangwei,et al."Variations of the Plasma Environment Revealed by the Evolution of the Supra-arcade Fan in the 2017 September 10 Flare".ASTROPHYSICAL JOURNAL 929.1(2022).
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