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Distribution of latitudes and speeds of coronal mass ejections in the northern and southern hemispheres in cycle 23
Gao PX(高朋鑫)1,2; Li QX(李启秀)1,2; Zhong SH(钟树华)1; Gao, PX (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Yunnan, Peoples R China.
发表期刊JOURNAL OF ASTROPHYSICS AND ASTRONOMY
2007-12
卷号28期号:4页码:207-215
DOI10.1007/s12036-007-0018-2
产权排序第1完成单位
收录类别SCI
关键词Sun : Activity Sun : Coronal Mass Ejections (Cmes)
摘要Distribution of latitudes and speeds of Coronal Mass Ejections (CMEs) in the northern and southern hemispheres in cycle 23, from September 1996 to December 2006, have been analyzed. By calculating the actual probability of the hemispheric distribution of the activity of the CME, we find that a southern dominance of the activity of the CME is shown to occur in cycle 23 from September 1996 to December 2006. The CME activity occurs at all latitudes and is most common at low latitudes. This should furnish evidence to support that CMEs are associated with source magnetic structures on a large spatial scale, even with transequatorial source magnetic structures on a large spatial scale. The latitudinal distribution of CMEs in the northern and southern hemispheres are no different from a statistical point of view. The speed distribution in the northern and southern hemispheres are nearly identical and to a good approximation they can be fitted with a single lognormal distribution. This finding implies that, statistically, there is no physical distinction between the CME events in the southern and northern hemispheres and the same mechanism of a nonlinear nature acting in both the CME events in the northern and southern hemispheres. Our conclusions seem to suggest that the northernsouthern asymmetry of the CME events is related to the northern-southern asymmetry in solar dynamo theory.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0250-6335
URL查看原文
归档日期2008-03-24
WOS记录号WOS:000254050200005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]UPPER CONVECTION ZONE ; SOLAR-CYCLE ; SMM OBSERVATIONS ; FLARE INDEX ; EARTH ; ASYMMETRY ; TIME ; 1-AU
引用统计
被引频次:14[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/114a53/6100
专题太阳物理研究组
通讯作者Gao, PX (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Yunnan, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, Yunnan, China
2.School of Graduate, CAS, Beijing, China
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GB/T 7714
Gao PX,Li QX,Zhong SH,et al. Distribution of latitudes and speeds of coronal mass ejections in the northern and southern hemispheres in cycle 23[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2007,28(4):207-215.
APA Gao PX,Li QX,Zhong SH,&Gao, PX .(2007).Distribution of latitudes and speeds of coronal mass ejections in the northern and southern hemispheres in cycle 23.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,28(4),207-215.
MLA Gao PX,et al."Distribution of latitudes and speeds of coronal mass ejections in the northern and southern hemispheres in cycle 23".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 28.4(2007):207-215.
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