Rapid Decay of a Penumbral Sector Associated with a Strong Light Bridge in Active Region NOAA 12680
文献类型:期刊论文
作者 | Li, Qiaoling3,4; Zhang, Li3; Yan XL(闫晓理)1,2; Wang JC(王金成)1,2; Yang LH(杨丽恒)1,2; Xue ZK(薛志科)1,2 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2023 |
卷号 | 942期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/aca667 |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | We present observations of the rapid decay of a penumbral sector associated with a strong light bridge (LB) in the active region NOAA 12680 by analyzing the scattered light-corrected Solar Dynamics Observatory/Helioseismic and Magnetic Imager data. At the beginning of penumbral decay, some dark structures gradually broke away from the umbra to which they were attached. The intensity, vertical field strength, and magnetic inclination of the dark structures are intermediate between those of the umbra and penumbra. And a strong LB formed in the umbra, which originated from the intrusion of neighboring penumbral filaments. With the formation of an LB, the total magnetic flux in the whole penumbra decreased, and a penumbral sector of the sunspot rapidly disappeared on one side of the LB. After performing a partition analysis of the penumbra, it was found that the decay rate in this region of the penumbral sector is significantly accelerated after the appearance of an outward motion of magnetic flux along the LB. The area of this penumbral sector decreased from 21-16 MSH in 4 hr. The reduction in area in this penumbral sector is accompanied by a large decay rate of the magnetic flux, 2.5 x 10(19) Mx hr(-1). These results suggest that the rapid decay of the penumbral sector is associated with the LB. The appearance of dark structures in the penumbra and the strong LB in the umbra may offer a hint that the origin of massive flux migration from the sunspot umbra may have accelerated the decay of the sunspot. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | VECTOR MAGNETIC-FIELDS ; HIGH-RESOLUTION ; FINE-STRUCTURE ; DYNAMICS ; MAGNETOGRAMS ; SIMULATIONS ; AMBIGUITY ; SUNSPOTS |
资助项目 | National Key R&D program of China ; National Science Foundation of China (NSFC) ; Yunnan Science Foundation for Distinguished Young Scholars ; Yunnan Key Laboratory of Solar Physics and Space Science ; [2018YFA0404204] ; [11873087] ; [202001AV070004] ; [202205AG070009] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000910096700001 |
资助机构 | National Key R&D program of China ; National Science Foundation of China (NSFC) ; Yunnan Science Foundation for Distinguished Young Scholars ; Yunnan Key Laboratory of Solar Physics and Space Science ; [2018YFA0404204] ; [11873087] ; [202001AV070004] ; [202205AG070009] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25759] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Li, Qiaoling |
作者单位 | 1.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People's Republic of China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 3.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China lizhang@ynu.edu.cn; 4.Department of Physics, Yunnan University, Kunming 650091, People's Republic of China; liqiaoling@ynu.edu.cn; |
推荐引用方式 GB/T 7714 | Li, Qiaoling,Zhang, Li,Yan XL,et al. Rapid Decay of a Penumbral Sector Associated with a Strong Light Bridge in Active Region NOAA 12680[J]. ASTROPHYSICAL JOURNAL,2023,942(2). |
APA | Li, Qiaoling,Zhang, Li,Yan XL,Wang JC,Yang LH,&Xue ZK.(2023).Rapid Decay of a Penumbral Sector Associated with a Strong Light Bridge in Active Region NOAA 12680.ASTROPHYSICAL JOURNAL,942(2). |
MLA | Li, Qiaoling,et al."Rapid Decay of a Penumbral Sector Associated with a Strong Light Bridge in Active Region NOAA 12680".ASTROPHYSICAL JOURNAL 942.2(2023). |
入库方式: OAI收割
来源:云南天文台
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。