Light Bridges and Solar Active Region Evolution Processes

doi:10.3847/1538-4365/ad2515

	Light Bridges and Solar Active Region Evolution Processes
	Li, Fuyu 3,4,5,7; Rao, Changhui 4,6,7; Zhao, Xinhua 3; Guo, Yang 5; Gong, Xiaoying 4,6,7; Chen YH(陈雨豪)1,6; Xiang NB(向南彬)1,3; Wang, Huaning 2,7
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2024-03-01
卷号	271 期号:1
ISSN号	0067-0049
DOI	10.3847/1538-4365/ad2515
产权排序	第6完成单位
文献子类	Article
英文摘要	The formation mechanism of light bridges (LBs) is strongly related to the dynamic evolution of solar active regions (ARs). To study the relationship between LB formation and AR evolution phases, we employ 109 LB samples from 69 ARs in 2014 using observational data from the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. LBs are well matched with the weak field lanes (WFLs), except those aligned on the polarity inversion line of delta sunspots. For penumbral intrusion (type-A) and umbral-dot emergence (type-C) LBs, the WFLs represent the splitting of magnetic flux systems. The sunspots tend to decay and split into several parts after type-A and type-C LBs are formed. For sunspot/umbra-merging (type-B) LBs, the declining WFLs are caused by collisions of flux systems. The sunspots merged and remained stable after type-B LBs formed. We conclude that type-B LBs are formed by collisions of flux systems, while type-A and type-C LBs are generated by splits. The time differences (delta T) between LBs appearing and ARs peaking have an average value of 1.06, -1.60, and 1.82 days for type-A, B, and C LBs, with the standard deviations of 3.27, 2.17, and 1.89, respectively. A positive value of delta T means that the LB appears after the AR peaks, whereas a negative delta T means it appears before the peak. Type-A LBs tend to form in the decaying phase or around the peak time. Type-B LBs are more likely to be formed in the developing phase. Type-C LBs mostly take shape in the decaying phase of ARs.
学科主题	天文学
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12203054]; National Natural Science Foundation of China (NSFC); Specialized Research Fund for State Key Laboratories (CAS)[2023NSFSC1349]; Sichuan Science and Technology Program
WOS关键词	MAGNETIC-FIELDS ; FINE-STRUCTURE ; FILAMENTS ; RECONNECTION ; CONVECTION ; SUNSPOTS ; DRIVEN ; FLOWS ; JETS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001180438400001
资助机构	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12203054] ; National Natural Science Foundation of China (NSFC) ; Specialized Research Fund for State Key Laboratories (CAS)[2023NSFSC1349] ; Sichuan Science and Technology Program
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26558]
专题	云南天文台_太阳物理研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; 2.Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315000, People's Republic of China 3.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, People's Republic of China; 4.Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu 610209, People's Republic of China; 5.Key Laboratory of Modern Astronomy and Astrophysics of the Ministry of Education, Nanjing University, 210093, People's Republic of China; 6.University of Chinese Academy of Science, Beijing, People's Republic of China; 7.National Laboratory on Adaptive Optics, Chengdu 610209, People's Republic of China; lifuyu@ioe.ac.cn, chrao@ioe.ac.cn;
推荐引用方式 GB/T 7714	Li, Fuyu,Rao, Changhui,Zhao, Xinhua,et al. Light Bridges and Solar Active Region Evolution Processes[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2024,271(1).
APA	Li, Fuyu.,Rao, Changhui.,Zhao, Xinhua.,Guo, Yang.,Gong, Xiaoying.,...&Wang, Huaning.(2024).Light Bridges and Solar Active Region Evolution Processes.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,271(1).
MLA	Li, Fuyu,et al."Light Bridges and Solar Active Region Evolution Processes".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 271.1(2024).