The Formation and Decay of Sunspot Penumbrae in Active Region NOAA 12673 | |
Li QL(李巧玲)1,3; Yan XL(闫晓理)2,3; Wang JC(王金成)2,3; Kong DF(孔德芳)2,3; Xue ZK(薛志科)2,3; Yang LH(杨丽恒)2,3 | |
刊名 | ASTROPHYSICAL JOURNAL |
2019-12-01 | |
卷号 | 886期号:2页码:23 |
关键词 | Solar photosphere Solar magnetic fields Sunspots Penumbra |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab4f84 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | To better understand the formation and decay of sunspot penumbrae, we studied the evolution of sunspots in three regions of the active region NOAA 12673 in detail. The evolution of sunspots in the three regions was involved in the interaction of two magnetic field systems: the preexisting magnetic field system and the later-emerging magnetic field system. Through analyzing the photospheric magnetic field properties, it is found that the formation of the penumbra originated from newly emerging magnetic bipoles that were trapped in the photosphere. The change in magnetic field in a penumbra from horizontal to vertical can cause the disappearance of the penumbra. A transformation of the magnetic field between the umbra and the penumbra is found, and the outward moat flow around the sunspot gradually decreased and vanished during decay of the sunspot. In addition, we found that the mean longitudinal magnetic strength in the penumbra decreased and the mean transverse magnetic strength in the penumbra increased with the increasing penumbral area during the formation of sunspots. However, during the decay of sunspots, the mean longitudinal magnetic strength in the penumbra increased, and the mean transverse magnetic strength in the penumbra decreased with decreasing penumbral area. Comparatively, the dependence of the area and the mean transverse/longitudinal magnetic field strength in the umbra is not remarkable. These results reveal that the formation and decay process of umbra are different from penumbra. |
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 |
资助项目 | National Science Foundation of China (NSFC)[11873087] ; National Science Foundation of China (NSFC)[11603071] ; National Science Foundation of China (NSFC)[11503080] ; National Science Foundation of China (NSFC)[11633008] ; Youth Innovation Promotion Association CAS[2011056] ; Yunnan Science Foundation of China[2018FA001] ; Specialized Research Fund for State Key Laboratories ; Group for Innovation of Yunnan Province |
WOS关键词 | MOVING MAGNETIC FEATURES ; PORES ; FLUX ; EVOLUTION ; ORIGIN |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000501184700001 |
资助机构 | National Science Foundation of China (NSFC)[11873087, 11603071, 11503080, 11633008] ; Youth Innovation Promotion Association CAS[2011056] ; Yunnan Science Foundation of China[2018FA001] ; Specialized Research Fund for State Key Laboratories ; Group for Innovation of Yunnan Province |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21582] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Yan XL(闫晓理) |
作者单位 | 1.University of Chinese Academy of Sciences, Yuquan Road, Shijingshan Block, Beijing 100049, People's Republic of China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China |
推荐引用方式 GB/T 7714 | Li QL,Yan XL,Wang JC,et al. The Formation and Decay of Sunspot Penumbrae in Active Region NOAA 12673[J]. ASTROPHYSICAL JOURNAL,2019,886(2):23. |
APA | Li QL,Yan XL,Wang JC,Kong DF,Xue ZK,&Yang LH.(2019).The Formation and Decay of Sunspot Penumbrae in Active Region NOAA 12673.ASTROPHYSICAL JOURNAL,886(2),23. |
MLA | Li QL,et al."The Formation and Decay of Sunspot Penumbrae in Active Region NOAA 12673".ASTROPHYSICAL JOURNAL 886.2(2019):23. |
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