Asymmetric Distribution of the Solar Photospheric Magnetic-Field Values | |
Xu JC(徐景晨)2,3; Li KJ(李可军)1,3; Gao PX(高朋鑫)1,3 | |
刊名 | ASTROPHYSICAL JOURNAL |
2021-10 | |
卷号 | 919期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac106e |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | Understanding the characteristics of the solar magnetic field is essential for interpreting solar activities and dynamo. In this research, we investigated the asymmetric distribution of the solar photospheric magnetic-field values, using synoptic charts constructed from space-borne high-resolution magnetograms. It is demonstrated that the Lorentzian function describes the distribution of magnetic-field values in the synoptic charts much better than the Gaussian function and this should reflect the gradual decay process from strong to weak magnetic fields. The asymmetry values are calculated under several circumstances, and the results generally show two periodicities related to the variation of the solar B (0) angle and the solar cycle, respectively. We argue that it is the small-scale magnetic fields, the inclination of the solar axis, the emergence and evolution of magnetic flux, and the polar fields that are responsible for the features of asymmetry values. We further determined the polar-field reversal time of solar cycles 23 and 24 with the flip of asymmetry values. Specifically, for cycle 24, we assert that the polar polarities of both hemispheres reversed at the same time-in 2014 March; as to cycle 23, the reversal time of the S-hemisphere is 2001 March, while the determination of the N-hemisphere is hampered by missing data. |
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 Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11903077] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11973085] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11633008] ; Specialized Research Fund for State Key Laboratories ; Basic Research Priorities Program of Yunnan[202001AU070078] ; Basic Research Priorities Program of Yunnan[202101AT070019] ; Chinese Academy of SciencesChinese Academy of Sciences |
WOS关键词 | CYCLE ; ARRAY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000701257900001 |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11903077, 11973085, 11633008] ; Specialized Research Fund for State Key Laboratories ; Basic Research Priorities Program of Yunnan[202001AU070078, 202101AT070019] ; Chinese Academy of SciencesChinese Academy of Sciences |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24574] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Xu JC(徐景晨) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 2.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; jcxu@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Xu JC,Li KJ,Gao PX. Asymmetric Distribution of the Solar Photospheric Magnetic-Field Values[J]. ASTROPHYSICAL JOURNAL,2021,919(2). |
APA | Xu JC,Li KJ,&Gao PX.(2021).Asymmetric Distribution of the Solar Photospheric Magnetic-Field Values.ASTROPHYSICAL JOURNAL,919(2). |
MLA | Xu JC,et al."Asymmetric Distribution of the Solar Photospheric Magnetic-Field Values".ASTROPHYSICAL JOURNAL 919.2(2021). |
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