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Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited
Li KJ(李可军)1,2; Feng, W3; Shi XJ(石祥军)1,4; Xie JL(谢婧岚)1,4; Gao PX(高朋鑫)1; Liang, HF5; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊SOLAR PHYSICS
2014-03
卷号289期号:3页码:759-768
DOI10.1007/s11207-013-0369-6
产权排序第1完成单位
收录类别SCI
关键词Rotation Solar Cycle Sunspots Observations Velocity
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.
项目资助者973 programs [2012CB957801, 2011CB811406] ; National Natural Science Foundation of China [11273057, 11221063, 11147125, 11073010] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0038-0938
URL查看原文
归档日期2014-01-07
WOS记录号WOS:000328199700006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]NORTH-SOUTH ASYMMETRY ; BRIGHTNESS-TEMPERATURE REGIONS ; TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; MERIDIONAL MOTIONS ; MAGNETIC FEATURES ; CONVECTION ZONE ; ACTIVITY CYCLE ; MOUNT WILSON ; VELOCITY
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6257
专题太阳物理研究组
通讯作者Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing, 100012, China
3.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, China
4.Graduate School, CAS, Beijing, 100863, China
5.Department of Physics, Yunnan Normal University, Kunming, 650093, China
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GB/T 7714
Li KJ,Feng, W,Shi XJ,et al. Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited[J]. SOLAR PHYSICS,2014,289(3):759-768.
APA Li KJ.,Feng, W.,Shi XJ.,Xie JL.,Gao PX.,...&Li, KJ .(2014).Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited.SOLAR PHYSICS,289(3),759-768.
MLA Li KJ,et al."Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited".SOLAR PHYSICS 289.3(2014):759-768.
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