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Solar-cycle-related variation of solar differential rotation
Li KJ(李可军)1,2; Shi XJ(石祥军)1,3; Xie JL(谢婧岚)1,3; Gao PX(高朋鑫)1; Liang, HF4; Zhan, LS5; Feng, W6; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-07
卷号433期号:1页码:521-527
DOI10.1093/mnras/stt744
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Rotation Sun: Surface Magnetism
摘要Solar-cycle-related variation of differential rotation is investigated through analysing the rotation rates of magnetic fields, distributed along latitudes and varying with time at the time interval of 1976 August to 2008 April. More pronounced differentiation of rotation rates is found to appear at the ascending part of a Schwabe cycle than at the descending part on an average. The coefficient B in the standard form of differential rotation, which represents the latitudinal gradient of rotation, may be divided into three parts within a Schwabe cycle. Part 1 spans from the start to the fourth year of a Schwabe cycle, within which the absolute B is approximately a constant or slightly fluctuates. Part 2 spans from the fourth to the seventh year, within which the absolute B decreases. Part 3 spans from the seventh year to the end, within which the absolute B increases. Strong magnetic fields repress differentiation of rotation rates, so that rotation rates show less pronounced differentiation, but weak magnetic fields seem to just reflect differentiation of rotation rates. The solar-cycle-related variation of solar differential rotation is inferred to be the result of both the latitudinal migration of the surface torsional pattern and the repression of the strong magnetic activity to differentiation of rotation rates. The north-south asymmetry in solar rotation is investigated as well, and the Northern hemisphere should rotate faster than the southern in cycles 21-23.
项目资助者NSFC [11273057, 10921303, 11147125, 11073010] ; National Basic Research Program of China [2011CB811406, 2012CB957801] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
归档日期2013-07-10
WOS记录号WOS:000321461200042
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; CORONAL ROTATION ; CONVECTION ZONE ; SUNSPOT GROUPS ; MAGNETIC-FLUX ; MOUNT WILSON ; SUN ; PERIODICITIES ; ASYMMETRY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6228
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.Graduate School of CAS, Beijing 100863, China
4.Department of Physics, Yunnan Normal University, Kunming 650093, China
5.Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
6.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
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Li KJ,Shi XJ,Xie JL,et al. Solar-cycle-related variation of solar differential rotation[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,433(1):521-527.
APA Li KJ.,Shi XJ.,Xie JL.,Gao PX.,Liang, HF.,...&Li, KJ .(2013).Solar-cycle-related variation of solar differential rotation.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,433(1),521-527.
MLA Li KJ,et al."Solar-cycle-related variation of solar differential rotation".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 433.1(2013):521-527.
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