PMO OpenIR  > 太阳活动的多波段观测研究团组
Explosive Chromospheric Evaporation Driven by Nonthermal Electrons around One Footpoint of a Solar Flare Loop
Li, D.; Ning, Z. J.; Huang, Y.; Zhang, Q. M.
2017
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号841期号:1页码:L9-
摘要We explore the temporal relationship between microwave/hard X-ray (HXR) emission and Doppler velocity during the impulsive phase of a solar flare on 2014 October 27 (SOL2014-10-27) that displays a pulse on the light curves in the microwave (34 GHz) and HXR (25-50 keV) bands before the flare maximum. Imaging observation shows that this pulse mainly comes from one footpoint of a solar flare loop. The slit of the Interface Region Imaging Spectrograph (IRIS) stays at this footpoint during this solar flare. The Doppler velocities of Fe XXI. 1354.09 angstrom and Si IV. 1402.77. angstrom are extracted from the Gaussian fitting method. We find that the hot line of Fe XXI. 1354.09 angstrom (log T similar to 7.05) in the corona exhibits blueshift, while the cool line of Si IV. 1402.77 angstrom (log T similar to 4.8) in the transition region exhibits redshift, indicating explosive chromospheric evaporation. Evaporative upflows along the flare loop are also observed in the AIA 131 angstrom image. To our knowledge, this is the first report of chromospheric evaporation evidence from both spectral and imaging observations in the same flare. Both microwave and HXR pulses are well correlated with the Doppler velocities, suggesting that the chromospheric evaporation is driven by nonthermal electrons around this footpoint of a solar flare loop.
语种英语
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/17483
专题太阳活动的多波段观测研究团组
推荐引用方式
GB/T 7714
Li, D.,Ning, Z. J.,Huang, Y.,et al. Explosive Chromospheric Evaporation Driven by Nonthermal Electrons around One Footpoint of a Solar Flare Loop[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,841(1):L9-.
APA Li, D.,Ning, Z. J.,Huang, Y.,&Zhang, Q. M..(2017).Explosive Chromospheric Evaporation Driven by Nonthermal Electrons around One Footpoint of a Solar Flare Loop.ASTROPHYSICAL JOURNAL LETTERS,841(1),L9-.
MLA Li, D.,et al."Explosive Chromospheric Evaporation Driven by Nonthermal Electrons around One Footpoint of a Solar Flare Loop".ASTROPHYSICAL JOURNAL LETTERS 841.1(2017):L9-.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
2017034.pdf(1176KB)期刊论文作者接受稿开放获取Apache License浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, D.]的文章
[Ning, Z. J.]的文章
[Huang, Y.]的文章
百度学术
百度学术中相似的文章
[Li, D.]的文章
[Ning, Z. J.]的文章
[Huang, Y.]的文章
必应学术
必应学术中相似的文章
[Li, D.]的文章
[Ning, Z. J.]的文章
[Huang, Y.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 2017034.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。