Relation of Coronal Rain Originating from Coronal Condensations to Interchange Magnetic Reconnection
文献类型：期刊论文
| 作者 | Li,Leping1,3,4 ; Peter,Hardi2; Chitta,Lakshmi Pradeep2; Song,Hongqiang4
|
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 905期号:1 |
| 关键词 | Solar magnetic reconnection Plasma physics Solar corona Solar ultraviolet emission Spectroscopy |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abc68c |
| 英文摘要 | Abstract Using extreme-ultraviolet images, we recently proposed a new and alternative formation mechanism for coronal rain along magnetically open field lines due to interchange magnetic reconnection. In this paper we report coronal rain at chromospheric and transition region temperatures originating from the coronal condensations facilitated by reconnection between open and closed coronal loops. For this, we employ the Interface Region Imaging Spectrograph (IRIS) and the Atmospheric Imaging Assembly (AIA) of the Solar Dynamics Observatory. Around 2013 October 19, a coronal rain along curved paths was recorded by IRIS over the southeastern solar limb. Related to this, we found reconnection between a system of higher-lying open features and lower-lying closed loops that occurs repeatedly in AIA images. In this process, the higher-lying features form magnetic dips. In response, two sets of newly reconnected loops appear and retract away from the reconnection region. In the dips, seven events of cooling and condensation of coronal plasma repeatedly occur due to thermal instability over several days, from October 18 to 20. The condensations flow downward to the surface as coronal rain, with a mean interval between condensations of ～6.6 hr. In the cases where IRIS data were available we found the condensations to cool all the way down to chromospheric temperatures. Based on our observations we suggest that some of the coronal rain events observed at chromospheric temperatures could be explained by the new and alternative scenario for the formation of coronal rain, where the condensation is facilitated by interchange reconnection. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-905-1-ABC68C |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/61208]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li,Leping |
| 作者单位 | 1.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of Chinalepingli@nao.cas.cn 2.Max Planck Institute for Solar System Research, D-37077 G?ttingen, Germany 3.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 4.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, and Institute of Space Sciences, Shandong University, Weihai, Shandong 264209, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Leping,Peter,Hardi,Chitta,Lakshmi Pradeep,et al. Relation of Coronal Rain Originating from Coronal Condensations to Interchange Magnetic Reconnection[J]. The Astrophysical Journal,2020,905(1). |
| APA | Li,Leping,Peter,Hardi,Chitta,Lakshmi Pradeep,&Song,Hongqiang.(2020).Relation of Coronal Rain Originating from Coronal Condensations to Interchange Magnetic Reconnection.The Astrophysical Journal,905(1). |
| MLA | Li,Leping,et al."Relation of Coronal Rain Originating from Coronal Condensations to Interchange Magnetic Reconnection".The Astrophysical Journal 905.1(2020). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
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。