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ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24
Shi XJ(石祥军)1,2,3; Xie JL(谢婧岚)1,2; Shi, XJ (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2014-11
卷号148期号:5
DOI10.1088/0004-6256/148/5/101
产权排序第1完成单位
收录类别SCI
关键词Methods: Data Analysis Sun: Magnetic Fields Sun: Rotation
摘要The rotation of solar magnetic fields for the current solar cycle 24 is investigated through a cross-correlation analysis of the Carrington synoptic maps of solar photospheric magnetic fields during Carrington rotation numbers 2076-2146 (2008 October to 2014 January). The sidereal rotation rates of positive and negative magnetic fields at some latitudes are shown, and it can be found that the positive (negative) fields generally rotate faster than the negative (positive) fields in the southern (northern) hemisphere at low latitudes. The mean rotation profiles of total, positive, and negative magnetic fields between +/- 60 degrees latitudes in the time interval are also obtained. It should be noted that both of the mean rotation profiles of the positive and negative magnetic fields, as well as the mean rotation profile of the total magnetic field, exhibit a quasi-rigid rotation at latitudes above about 55 degrees. The mean rotation rates of the positive (negative) polarity reach their maximum values at about 9 degrees(6)degrees latitude in the southern (northern) hemisphere. The mean rotation profile of the total magnetic field displays an obvious north-south asymmetry, where the rotation seems to be more differential in the northern hemisphere. The latitude variation in the rotation rate differences between positive and negative magnetic fields is further studied, and it is found that magnetic fields with the same polarity as the leading sunspots at a given hemisphere rotate faster than those with the opposite polarity, except for the zones around 52 degrees latitude of the southern hemisphere and around 35 degrees latitude of the northern hemisphere. The implication of these results is discussed. It is clear that the obtained results can provide some observational constraints on the theoretical research of the mechanisms of differential rotation and solar cycle.
项目资助者973 programs [2012CB957801, 2011CB811406] ; National Natural Science Foundation of China [11273057, 11203068, 11221063] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2014-11-05
WOS记录号WOS:000344141200027
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]FLUX-TRANSPORT DYNAMO ; RECURRENT SUNSPOT GROUPS ; NORTH-SOUTH ASYMMETRY ; LONG-TERM VARIATIONS ; DIFFERENTIAL ROTATION ; MERIDIONAL CIRCULATION ; HEMISPHERIC-ASYMMETRY ; CORONAL ROTATION ; CONVECTION ; PATTERNS
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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/114a53/6240
专题太阳物理研究组
通讯作者Shi, XJ (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
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GB/T 7714
Shi XJ,Xie JL,Shi, XJ . ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24[J]. ASTRONOMICAL JOURNAL,2014,148(5).
APA Shi XJ,Xie JL,&Shi, XJ .(2014).ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24.ASTRONOMICAL JOURNAL,148(5).
MLA Shi XJ,et al."ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24".ASTRONOMICAL JOURNAL 148.5(2014).
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