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Long-term variations of the coronal rotation and solar activity
Li KJ(李可军)1,2; Shi XJ(石祥军)1,3; Feng, W4; Xie, JL1,3; Gao PX(高朋鑫)1; Zhan, LS5; Liang, HF6; Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2012-07
卷号423期号:4页码:3584-3588
DOI10.1111/j.1365-2966.2012.21155.x
产权排序第1完成单位
收录类别SCI
关键词Methods: Data Analysis Sun: Activity Sun: Corona Sun: Rotation
摘要Recently, Chandra and Vats have obtained the yearly period length of the solar coronal rotation cycle by analysing the daily adjusted solar radio flux at the 10.7-cm wavelength for the years 19472009. In this paper, we use the time series (series I) of the yearly period length to investigate the long-term variation of the rotation of radio emission corona, and we find a weak decreasing trend in the time series. We use the empirical mode decomposition to decompose both the yearly mean value (series II) of the solar radio flux at the 10.7-cm wavelength and series I into different periodical components. There is a secular trend for each of the two series, and we find a negative correlation in the two trends. The decomposed 11-yr-cycle components of the two series show different and complicated periods and there is a phase relation between them. We investigate the cycle-related variation of the coronal rotation length, and we find that there is no Schwable cycle of statistical significance for the long-term variation of the rotation cycle length.
项目资助者National Natural Science Foundation of China [10873032, 10921303, 11147125, 11073010] ; National Key Research Science Programmes of China [2011CB811406, 2012CB957801] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
归档日期2012-07-20
WOS记录号WOS:000306003600044
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]X-RAY CORONA ; DIFFERENTIAL ROTATION ; BRIGHT POINTS ; TIME-SERIES ; FE-XIV ; CYCLE ; PERIODICITIES ; RATES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6199
专题太阳物理研究组
通讯作者Li, KJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
3.Graduate School of the Chinese Academy of Sciences, Beijing, China
4.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
5.Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
6.Department of Physics, Yunnan Normal University, Kunming 650093, China
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GB/T 7714
Li KJ,Shi XJ,Feng, W,et al. Long-term variations of the coronal rotation and solar activity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,423(4):3584-3588.
APA Li KJ.,Shi XJ.,Feng, W.,Xie, JL.,Gao PX.,...&Li, KJ .(2012).Long-term variations of the coronal rotation and solar activity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,423(4),3584-3588.
MLA Li KJ,et al."Long-term variations of the coronal rotation and solar activity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 423.4(2012):3584-3588.
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