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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; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2013-06
卷号206期号:2页码:1-6
DOI10.1088/0067-0049/206/2/15
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Rotation Sunspots
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.
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
ISSN0067-0049
URL查看原文
归档日期2013-07-10
WOS记录号WOS:000325654800006
WOS研究方向Astronomy & Astrophysics
WOS类目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
引用统计
被引频次:4[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/114a53/6229
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
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GB/T 7714
Li KJ,Xie JL,Shi XJ,et al. INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,206(2):1-6.
APA Li KJ,Xie JL,Shi XJ,&Li, KJ .(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.
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