The Decay of α-configuration Sunspots
文献类型：期刊论文
| 作者 | Li,Qiaoling1,2; Zhang,Li2; Yan,Xiaoli3,4; Wang,Jincheng3,4,5; Kong,Defang3,4; Yang,Liheng3,4; Xue,Zhike3,4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 913期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Sunspots Solar magnetic fields Solar photosphere |
| DOI | 10.3847/1538-4357/abfa1b |
| 英文摘要 | Abstract To better understand the decay of different types of sunspots, we studied the decay of eight α-configuration sunspots by using the data that were acquired by the Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory. We followed their decay for about four days and analyzed the evolution of their photospheric area and magnetic field parameters. We found that the area and total magnetic flux of α sunspots show a near-linear decrease during their decay. Meanwhile, the area decay rate of an individual sunspot is not constant. The area decay of a sunspot can be divided into two stages, a slow and a rapid decay process. Moreover, according to the difference of the area decay of the penumbra and umbra, the α sunspots decay can be classified in three ways: the penumbra and umbra decay synchronously, the penumbra decays first, and the umbra decays first. In addition, the flux decay of the penumbra is lagging behind the decay of the penumbral area. This finding suggests that the vertical magnetic field of the sunspot penumbra increases significantly in the early stage of sunspot decay. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-913-2-ABFA1B |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57214]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li,Qiaoling |
| 作者单位 | 1.Department of Physics, Yunnan University, Kunming 650091, People’s Republic of China; liqaioling@ynu.edu.cn 2.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People’s Republic of China; lizhang@ynu.edu.cn 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China 5.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, 100012, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Qiaoling,Zhang,Li,Yan,Xiaoli,et al. The Decay of α-configuration Sunspots[J]. The Astrophysical Journal,2021,913(2). |
| APA | Li,Qiaoling.,Zhang,Li.,Yan,Xiaoli.,Wang,Jincheng.,Kong,Defang.,...&Xue,Zhike.(2021).The Decay of α-configuration Sunspots.The Astrophysical Journal,913(2). |
| MLA | Li,Qiaoling,et al."The Decay of α-configuration Sunspots".The Astrophysical Journal 913.2(2021). |
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来源：国家天文台
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