INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION

	INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION
	Li KJ(李可军)1,2; Xie JL(谢婧岚)1,3 ; Shi XJ(石祥军)1,3
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2013-06
卷号	206 期号:2 页码:1-6
关键词	Sun: activity Sun: rotation sunspots
ISSN号	0067-0049
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	The latitudinal distributions of the yearly mean rotation rates measured by Suzuki in 1998 and 2012 and Pulkkinen & Tuominen in 1998 are utilized to investigate internal-cycle variation of solar differential rotation. The rotation rate at the solar equator seems to have decreased since cycle 10 onward. The coefficient B of solar differential rotation, which represents the latitudinal gradient of rotation, is found to be smaller in the several years after the minimum of a solar cycle than in the several years after the maximum time of the cycle, and it peaks several years after the maximum time of the solar cycle. The internal-cycle variation of the solar rotation rates looks similar in profile to that of the coefficient B. A new explanation is proposed to address such a solar-cycle-related variation of the solar rotation rates. Weak magnetic fields may more effectively reflect differentiation at low latitudes with high rotation rates than at high latitudes with low rotation rates, and strong magnetic fields may more effectively repress differentiation at relatively low latitudes than at high latitudes. The internal-cycle variation is inferred as the result of both the latitudinal migration of the surface torsional pattern and the repression of strong magnetic activity in differentiation.
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]	LONG-TERM VARIATIONS ; SUNSPOT GROUPS ; TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; MERIDIONAL MOTIONS ; CORONAL ROTATION ; CONVECTION ZONE ; MOUNT WILSON ; SUN ; VELOCITY
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0067-0049/206/2/15/meta
语种	英语
WOS记录号	WOS:000325654800006
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6229]
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
推荐引用方式 GB/T 7714	Li KJ,Xie JL,Shi XJ. INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,206(2):1-6.
APA	Li KJ,Xie JL,&Shi XJ.(2013).INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,206(2),1-6.
MLA	Li KJ,et al."INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 206.2(2013):1-6.