Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited
文献类型：期刊论文
| 作者 | Li, K. J.1,2; Feng, W.3; Shi, X. J.1,4; Xie, J. L.1,4; Gao, P. X.1; Liang, H. F.5 |
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2014-03-01 |
| 卷号 | 289期号:3页码:759-768 |
| 关键词 | Rotation Solar cycle, observations Sunspots, velocity |
| 英文摘要 | Long-term variations of solar differential rotation and sunspot activity are investigated through re-analyzing the data on parameters of the differential-rotation law obtained by Makarov, Tlatov, and Callebaut (Solar Phys. 170, 373, 1997), Javaraiah, Bertello, and Ulrich (Astrophys. J. 626, 579, 2005a; Solar Phys. 232, 25, 2005b), and Javaraiah et al. (Solar Phys. 257, 61, 2009). Our results indicate that the solar-surface-rotation rate at the Equator (indicated by the A-parameter of the standard solar-rotation law) shows a secular decrease since Cycle 12 onwards, given by about 1 - 1.5 x 10(-3) (deg day(-1) year(-1)). The B-parameter of the standard differential-rotation law seems to also show a secular decrease since Cycle 12 onwards, but of weak statistical significance. The rotation rate averaged over latitudes 0 degrees-40 degrees does not show a secular trend of statistical significance. Moreover, the average sunspot area shows a secular increase of statistical significance since Cycle 12 onwards, while a negative correlation is found between the level of sunspot activity (indicated by the average sunspot area) and the solar equatorial rotation on long-term scales. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000328199700006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6479]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 3.Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100863, Peoples R China 5.Yunnan Normal Univ, Dept Phys, Kunming 650093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, K. J.,Feng, W.,Shi, X. J.,et al. Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited[J]. SOLAR PHYSICS,2014,289(3):759-768. |
| APA | Li, K. J.,Feng, W.,Shi, X. J.,Xie, J. L.,Gao, P. X.,&Liang, H. F..(2014).Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited.SOLAR PHYSICS,289(3),759-768. |
| MLA | Li, K. J.,et al."Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited".SOLAR PHYSICS 289.3(2014):759-768. |
入库方式： OAI收割
来源：国家天文台
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