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ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES
Shi XJ(石祥军)1,2,3; Xie JL(谢婧岚)1,2
Source PublicationASTRONOMICAL JOURNAL
2015-04-01
Volume149Issue:4
DOI10.1088/0004-6256/149/4/126
Contribution Rank第1完成单位
Indexed BySCI
KeywordMethods: Data Analysis Sun: Magnetic Fields Sun: Rotation
Abstract

Based on a cross-correlation analysis of the Carrington synoptic maps of solar photospheric magnetic fields from Carrington Rotations Nos. 1625 to 2135 (from 1975 February to 2013 March), the sidereal rotation rates of the positive and negative magnetic fields in the latitude range of +/- 60 degrees are obtained, and the rotation rate differences between them are investigated. The time-latitude distribution of the rate differences is shown, which looks like a butterfly diagram at the low and middle latitudes. For comparison, the time-latitude distribution of the longitudinally averaged photospheric magnetic fields is shown. We conclude that the magnetic fields having the same polarity as the leading sunspots at a given hemisphere rotate faster than those exhibiting the opposite polarity at low and middle latitudes. However, at higher latitudes, the magnetic fields having the same polarity as the leading sunspots at a given hemisphere do not always rotate faster than those with the opposite polarity. Furthermore, the relationship between the rotation rate differences and solar magnetic fields is studied through a correlation analysis. Our result shows that the correlation coefficients between them reach maximum values at 13 degrees (14 degrees) latitude in the northern (southern) hemisphere, and change sign at 28 degrees latitude in both hemispheres, then reach their minimum values at 58 degrees (53 degrees) latitude in the northern (southern) hemisphere.

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] ; Applied Basic Research of Yunnan Province in China grant[2014FB190] ; Chinese Academy of Sciences
Funding Organization973 programs[2012CB957801, 2011CB811406] ; National Natural Science Foundation of China[11273057, 11203068, 11221063] ; Applied Basic Research of Yunnan Province in China grant[2014FB190] ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 太阳与太阳系
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 Date2015-03-12
WOS IDWOS:000352336800010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMICHELSON DOPPLER IMAGER ; CONVECTION ZONE ; ACTIVE REGIONS ; SUNSPOT GROUPS ; TEMPORAL VARIATIONS ; MERIDIONAL DRIFT ; CYCLES 20 ; PATTERN ; DYNAMO ; FLOWS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6271
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 RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES[J]. ASTRONOMICAL JOURNAL,2015,149(4).
APA Shi XJ,&Xie JL.(2015).ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES.ASTRONOMICAL JOURNAL,149(4).
MLA Shi XJ,et al."ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES".ASTRONOMICAL JOURNAL 149.4(2015).
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