Solar-cycle-related variation of solar differential rotation

	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, W 6
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2013-07
卷号	433 期号:1 页码:521-527
关键词	Sun: activity Sun: rotation Sun: surface magnetism
ISSN号	0035-8711
通讯作者	Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; CORONAL ROTATION ; CONVECTION ZONE ; SUNSPOT GROUPS ; MAGNETIC-FLUX ; MOUNT WILSON ; SUN ; PERIODICITIES ; ASYMMETRY
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/433/1/521
语种	英语
WOS记录号	WOS:000321461200042
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6228]
专题	云南天文台_太阳物理研究组
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
推荐引用方式 GB/T 7714	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.,...&Feng, W.(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.