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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
Source PublicationASTRONOMICAL JOURNAL
2014-11
Volume148Issue:5
DOI10.1088/0004-6256/148/5/101
Contribution Rank第1完成单位
Indexed BySCI
KeywordMethods: Data Analysis Sun: Magnetic Fields Sun: Rotation
Abstract

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.

Funding Project973 programs[2012CB957801] ; 973 programs[2011CB811406] ; National Natural Science Foundation of China[11273057] ; National Natural Science Foundation of China[11203068] ; National Natural Science Foundation of China[11221063] ; Chinese Academy of Sciences
Funding Organization973 programs[2012CB957801, 2011CB811406] ; National Natural Science Foundation of China[11273057, 11203068, 11221063] ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
Archive Date2014-11-05
WOS IDWOS:000344141200027
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordFLUX-TRANSPORT DYNAMO ; RECURRENT SUNSPOT GROUPS ; NORTH-SOUTH ASYMMETRY ; LONG-TERM VARIATIONS ; DIFFERENTIAL ROTATION ; MERIDIONAL CIRCULATION ; HEMISPHERIC-ASYMMETRY ; CORONAL ROTATION ; CONVECTION ; PATTERNS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6240
Collection太阳物理研究组
Corresponding AuthorShi XJ(石祥军)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi XJ,Xie JL. ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24[J]. ASTRONOMICAL JOURNAL,2014,148(5).
APA Shi XJ,&Xie JL.(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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