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VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY
Li, K. J.1,2; Shi, X. J.1,3; Liang, H. F.4; Zhan, L. S.5; Xie, J. L.1,3; Feng, W.6
2011-03-20
发表期刊ASTROPHYSICAL JOURNAL
卷号730期号:1
摘要The continuous wavelet transformation is used to study the temporal variations of the rotational cycle length of daily sunspot numbers from 1849 January 1 to 2010 February 28, from a global point of view. The rotational cycle length of the Sun is found to have a secular trend, which statistically shows a linear decrease by about 0.47 days during the time interval considered. The empirical mode decomposition analysis of the temporal variations of the rotational cycle length shows an acceleration trend for the surface rotation rate from cycles 11 to 19, but a deceleration trend from the beginning of cycle 20 onward. We cannot determine whether the rotation rate around the maximum times of the Schwable cycles should be faster or slower than that around the minimum times, implying no Schwable cycle in the long-term variations of rotation. The results obtained are compared to those from the literature. It is inferred that the variation of the rotational cycle length may be related to the variation of sunspot activity in the long run.
关键词Sun: Activity Sun: Rotation Sunspots
DOI10.1088/0004-637X/730/1/49
收录类别SCI
语种英语
WOS记录号WOS:000288453600048
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8058
专题星系宇宙学研究部
作者单位1.CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
2.CAS, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.CAS, Grad Sch, Beijing 100863, Peoples R China
4.Yunnan Normal Univ, Dept Phys, Kunming 650093, Peoples R China
5.Jingdezhen Ceram Inst, Jingdezhen 333001, Jiangxi, Peoples R China
6.Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Peoples R China
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Li, K. J.,Shi, X. J.,Liang, H. F.,et al. VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY[J]. ASTROPHYSICAL JOURNAL,2011,730(1).
APA Li, K. J.,Shi, X. J.,Liang, H. F.,Zhan, L. S.,Xie, J. L.,&Feng, W..(2011).VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY.ASTROPHYSICAL JOURNAL,730(1).
MLA Li, K. J.,et al."VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY".ASTROPHYSICAL JOURNAL 730.1(2011).
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