Periodicity in the most violent solar eruptions: recent observations of coronal mass ejections and flares revisited

被引：10
作者：
Gao, Peng-Xin [1 ,2 ]
Xie, Jing-Lan [1 ,3 ]
Liang, Hong-Fei [4 ]
机构：
[1] Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
[2] Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[4] Yunnan Normal Univ, Dept Phys, Kunming 650093, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2012年 / 12卷 / 03期
基金：
中国国家自然科学基金;
关键词：
methods: data analysis; Sun: activity; Sun: coronal mass ejections (CMEs); Sun: flares; EMPIRICAL MODE DECOMPOSITION; SHORT-TERM PERIODICITIES; SUNSPOT NUMBERS; INDEX; OSCILLATIONS;
D O I：
10.1088/1674-4527/12/3/008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using the Hilbert-Huang Transform method, we investigate the periodicity in the monthly occurrence numbers and monthly mean energy of coronal mass ejections (CMEs) observed by the Large Angle and Spectrometric Coronagraph Experiment on board the Solar and Heliographic Observatory from 1999 March to 2009 December. We also investigate the periodicity in the monthly occurrence numbers of Ha flares and monthly mean flare indices from 1996 January to 2008 December. The results show the following. (1) The period of 5.66 yr is found to be statistically significant in the monthly occurrence numbers of CMEs; the period of 10.5 yr is found to be statistically significant in the monthly mean energy of CMEs. (2) The periods of 3.05 and 8.70 yr are found to be statistically significant in the monthly occurrence numbers of Ha flares; the period of 9.14 yr is found to be statistically significant in the monthly mean flare indices.
引用
收藏
页码：322 / 330
页数：9
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