Distribution of latitudes and speeds of coronal mass ejections in the northern and southern hemispheres in cycle 23
文献类型：期刊论文
| 作者 | Gao PX(高朋鑫)1,2 ; Li QX(李启秀)1,2; Zhong SH(钟树华)1
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| 刊名 | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
 |
| 出版日期 | 2007-12 |
| 卷号 | 28期号:4页码:207-215 |
| 关键词 | sun : activity sun : coronal mass ejections (CMEs) |
| ISSN号 | 0250-6335 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Gao, PX (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Yunnan, Peoples R China. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | UPPER CONVECTION ZONE ; SOLAR-CYCLE ; SMM OBSERVATIONS ; FLARE INDEX ; EARTH ; ASYMMETRY ; TIME ; 1-AU |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs12036-007-0018-2 |
| 语种 | 英语 |
| WOS记录号 | WOS:000254050200005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6100]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, Yunnan, China 2.School of Graduate, CAS, Beijing, China |
| 推荐引用方式 GB/T 7714 | Gao PX,Li QX,Zhong SH. 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.(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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来源：云南天文台
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