Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope

doi:10.3847/1538-4357/ab01cf

	Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope
	Zhou,G. P.1; Tan,C. M.1; Su,Y. N.2,3; Shen,C. L.4; Tan,B. L.1; Jin,C. L.1; Wang,J. X.1
刊名	The Astrophysical Journal
	2019-02-28
卷号	873 期号:1
关键词	Sun: activity Sun: coronal mass ejections (CMEs) Sun: flares Sun: magnetic fields Sun: radio radiation
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab01cf
英文摘要	Abstract Magnetic flux ropes (MFRs), as the most probable core structure of solar eruptive activity, remain mysterious on their origination, magnetic environment, and erupting mechanisms. Here, we newly identify a large-scale hot channel MFR, named “MFR3”, that connects an anti-Hale active region (AR) 11429 and a normal AR 11430 on 2012 March 7 based on multi-wavelength observations. An oscillation is first detected at the top of MFR3 during 00:10–00:30 UT as triggered by an X5.4 flare-related eruption of an MFR (named “MFR1” here) in AR 11429. Then, after a quiet period of ～20 minutes at around 00:52 UT, external magnetic reconnection (EMR) occurred above MFR3 manifested by not only bidirectional outflow in extreme ultraviolet images, but also microwave quasi-periodic pulsation in broadband radio spectral observations for the first time. With the occurrence of EMR, the large-scale MFR3 quickly erupted at 01:01 UT and triggered an X1.3 flare, which is related to the eruption of the other MFR (named “MFR2” here) in AR 11429 at 01:05 UT. The erupting MFR3 and MFR2 appeared successively in the same associated halo coronal mass ejection (CME) as two different core structures. The identification of the large-scale MFR3 between two separated ARs and its complex activity may shed new light on our understanding of the initiation mechanism of a CME. Further work should lay emphasis on how a large-scale MFR3 forms in the solar atmosphere.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-873-1-AB01CF
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23482]
专题	中国科学院紫金山天文台
作者单位	1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Science, Beijing 100101, People’s Republic of China gpzhou@nao.cas.cn 2.Key Laboratory of DMSA, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China 3.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 4.CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, People’s Republic of China
推荐引用方式 GB/T 7714	Zhou,G. P.,Tan,C. M.,Su,Y. N.,et al. Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope[J]. The Astrophysical Journal,2019,873(1).
APA	Zhou,G. P..,Tan,C. M..,Su,Y. N..,Shen,C. L..,Tan,B. L..,...&Wang,J. X..(2019).Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope.The Astrophysical Journal,873(1).
MLA	Zhou,G. P.,et al."Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope".The Astrophysical Journal 873.1(2019).