中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 太阳活动的多波段观测研究团组  > 期刊论文
题名: Two Episodes of Magnetic Reconnections during a Confined Circular-ribbon Flare
作者: Li, Ting; Yang, Shuhong; Zhang, Qingmin; Hou, Yijun; Zhang, Jun
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2018
卷号: 859, 期号:2, 页码:122
英文摘要: We analyze a unique event with an M1.8 confined circular-ribbon flare on 2016 February 13, with successive formations of two circular ribbons at the same location. The flare had two distinct phases of UV and extreme ultraviolet emissions with an interval of about 270 s, of which the second peak was energetically more important. The first episode was accompanied by the eruption of a mini-filament and the fast elongation motion of a thin circular ribbon (CR1) along the counterclockwise direction at a speed of about 220 km s(-1). Two elongated spinerelated ribbons were also observed, with the inner ribbon co-temporal with CR1 and the remote brightenings forming similar to 20 s later. In the second episode, another mini-filament erupted and formed a blowout jet. The second circular ribbon and two spine-related ribbons showed similar elongation motions with that during the first episode. The extrapolated three-dimensional coronal magnetic fields reveal the existence of a fan-spine topology, together with a quasi-separatrix layer (QSL) halo surrounding the fan plane and another QSL structure outlining the inner spine. We suggest that continuous null-point reconnection between the filament and ambient open field occurs in each episode, leading to the sequential opening of the filament and significant shifts of the fan plane footprint. For the first time, we propose a compound eruption model of circular-ribbon flares consisting of two sets of successively formed ribbons and eruptions of multiple filaments in a fan-spine-type magnetic configuration.
语种: 英语
WOS记录号: WOS:000433938500021
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/18054
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2018068.pdf(2717KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Li, Ting]'s Articles
[Yang, Shuhong]'s Articles
[Zhang, Qingmin]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Li, Ting]‘s Articles
[Yang, Shuhong]‘s Articles
[Zhang, Qingmin]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2018068.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace