Cyclic behavior of solar full-disk activity

doi:10.1029/2007JA012846

YNAO OpenIR > 太阳物理研究组

	Cyclic behavior of solar full-disk activity
	Li KJ(李可军)1 ; Li QX(李启秀)1,2 ; Gao PX(高朋鑫)1,2 ; Shi XJ(石祥军)1,2 ; Li, KJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2008-11-29
卷号	113 期号:A11
DOI	10.1029/2007JA012846
产权排序	第1完成单位
收录类别	SCI
摘要	In order to describe the cyclic behavior of solar full-disk activity (the surface magnetic fields, filaments, the green Fe XIV, 5303 angstrom corona local maxima intensities, and torsional oscillations), we propose a new concept, a "full-disk activity cycle,'' which consists of two successive normal cycles: a high-latitude activity cycle following a low-latitude activity cycle. When solar activity begins to progress into a full-disk activity cycle, it latitudinally rushes to the poles, starting from middle latitudes (about 40 degrees) at about a normal cycle minimum. At the solar poles, magnetic polarity reversal takes place on both the solar hemispheres, and opposite reversals occur on the opposite hemispheres; resultingly, the new appearing magnetic polarity at high latitudes on a hemisphere will become the leading magnetic polarity of regions at low latitudes on the same hemisphere in the following normal cycle. After the latitudinal drift of solar activity reaches the solar poles at about the maximum time of the normal cycle, solar activity begins to latitudinally migrate in a reverse direction; it moves toward the equator continually till almost arriving at the solar equator and lasting for about 1.5 normal cycles. When a full-disk activity cycle progresses from a high-latitude activity cycle into a low-latitude activity cycle, the next full-disk activity cycle begins. Two successive full-disk activity cycles have a normal cycle overlapped in time but are spatially separated. The characteristics of full-disk activity cycles are summarized as well. At present we do not know why a full-disk activity cycle begins at midlatitudes; it is perhaps related with solar differential rotation. Further work is required to uncover the physical mechanisms behind the concept.
项目资助者	Natural Science Funds of China(40636031, 10573034) ; 973 project(2006CB806300) ; Chinese Academy of Sciences
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0148-0227
URL	查看原文
归档日期	2008-12-03
WOS记录号	WOS:000261247600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	POLAR MAGNETIC-FIELDS ; GREEN CORONA ; TORSIONAL OSCILLATIONS ; BUTTERFLY DIAGRAM ; SUN ; PROMINENCES ; ASYMMETRY ; FILAMENTS ; DYNAMICS ; MINIMUM
引用统计	被引频次：25[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/114a53/6117
专题	太阳物理研究组
通讯作者	Li, KJ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Kunming, China 2.Graduate University of Chinese Academy of Sciences, Beijing, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Li KJ,Li QX,Gao PX,et al. Cyclic behavior of solar full-disk activity[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2008,113(A11).
APA	Li KJ,Li QX,Gao PX,Shi XJ,&Li, KJ .(2008).Cyclic behavior of solar full-disk activity.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,113(A11).
MLA	Li KJ,et al."Cyclic behavior of solar full-disk activity".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 113.A11(2008).

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