ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES

	ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES
	Shi, X. J.1,2,3; Xie, J. L.1,2; Shi XJ(石祥军); Xie JL(谢婧岚)
刊名	ASTRONOMICAL JOURNAL
	2015-04-01
卷号	149 期号:4
关键词	methods: data analysis Sun: magnetic fields Sun: rotation
ISSN号	0004-6256
通讯作者	Shi, XJ (reprint author), Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
产权排序	第一完成单位
英文摘要	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.
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]	MICHELSON DOPPLER IMAGER ; CONVECTION ZONE ; ACTIVE REGIONS ; SUNSPOT GROUPS ; TEMPORAL VARIATIONS ; MERIDIONAL DRIFT ; CYCLES 20 ; PATTERN ; DYNAMO ; FLOWS
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-6256/149/4/126/meta
语种	英语
WOS记录号	WOS:000352336800010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6271]
专题	云南天文台_太阳物理研究组
通讯作者	Shi XJ(石祥军)
作者单位	1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Shi, X. J.,Xie, J. L.,Shi XJ,et al. ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES[J]. ASTRONOMICAL JOURNAL,2015,149(4).
APA	Shi, X. J.,Xie, J. L.,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, X. J.,et al."ROTATION RATE DIFFERENCES OF POSITIVE AND NEGATIVE SOLAR MAGNETIC FIELDS BETWEEN +/- 60 degrees LATITUDES".ASTRONOMICAL JOURNAL 149.4(2015).