Tilt Angles of Sunspot Groups in Different Latitude Bands and the Amplitude of the Next Solar Cycle
文献类型：期刊论文
| 作者 | Gao PX(高朋鑫)1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-03-10 |
| 卷号 | 999期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae42c6 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | In the Babcock-Leighton and Parker dynamo models, the tilt angle of a sunspot group (SG) and the turbulence in the solar convection zone (one widely accepted generation mechanism responsible for the scatter of the tilt angles of SGs around the mean), respectively, are thought to represent the source of the poloidal field, which serves as the seed field for the toroidal field forming SGs during the next solar cycle (SC). We analyse the sunspot data from the Kodaikanal observatory to investigate the relationships of the mean tilt angles and the tilt-angle scatters (the standard deviations of the tilt angles) in different latitude bands with the amplitude of the next/same SC. The two main findings of our analysis are as follows. (1) The mean tilt angle at low latitudes (<= 10(degrees)) has a significant positive correlation with the amplitude of the next SC; however, the mean tilt angle at high latitudes (>20(degrees)) shows a significant anticorrelation with the amplitude of the next SC. (2) The tilt-angle scatter at low latitudes exhibits a significant anticorrelation with the amplitude of the next SC, while the tilt-angle scatter at high latitudes has a significant positive correlation with the amplitude of the same SC. These findings suggest that the tilt angles of SGs in different latitude bands play different roles in regulating SC variability. |
| 学科主题 | 天文学 ; 太阳与太阳系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | MAGNETIC-FLUX TRANSPORT ; DYNAMO ; FIELD ; PREDICTION ; EVOLUTION ; STRENGTH ; SURFACE ; SCATTER ; MODEL |
| 资助项目 | National Knowledge Network; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009]; Chinese Academy of Sciences |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001705086100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Knowledge Network ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; Chinese Academy of Sciences |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29030]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 通讯作者 | Gao PX(高朋鑫) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; gaopengxin@ynao.ac.cn; 2.Yunnan Key Laboratory of the Solar Physics and Space Science, Kunming 650216, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Gao PX. Tilt Angles of Sunspot Groups in Different Latitude Bands and the Amplitude of the Next Solar Cycle[J]. ASTROPHYSICAL JOURNAL,2026,999(2). |
| APA | 高朋鑫.(2026).Tilt Angles of Sunspot Groups in Different Latitude Bands and the Amplitude of the Next Solar Cycle.ASTROPHYSICAL JOURNAL,999(2). |
| MLA | 高朋鑫."Tilt Angles of Sunspot Groups in Different Latitude Bands and the Amplitude of the Next Solar Cycle".ASTROPHYSICAL JOURNAL 999.2(2026). |
入库方式： OAI收割
来源：云南天文台
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