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VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY
Li KJ(李可军)1,2; Shi XJ(石祥军)1,3; Liang, HF4; Zhan, LS5; Xie, JL1,3; Feng, W6; Li, KJ (reprint author), CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2011-03-20
卷号730期号:1
DOI10.1088/0004-637X/730/1/49
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Rotation Sunspots
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.
项目资助者NSFC [10873032, 10921303, 11073010, 40636031] ; National Key Research Science Foundation [2011CB811406] ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2011-04-07
WOS记录号WOS:000288453600048
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIFFERENTIAL ROTATION ; TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; CONVECTION ZONE ; MOUNT WILSON ; TIME-SERIES ; CYCLE ; VELOCITY ; DECOMPOSITION ; TRANSFORM
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6182
专题太阳物理研究组
通讯作者Li, KJ (reprint author), CAS, 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 CAS, Beijing 100863, China
4.Department of Physics, Yunnan Normal University, Kunming 650093, China
5.Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
6.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
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GB/T 7714
Li KJ,Shi XJ,Liang, HF,et al. VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY[J]. ASTROPHYSICAL JOURNAL,2011,730(1).
APA Li KJ.,Shi XJ.,Liang, HF.,Zhan, LS.,Xie, JL.,...&Li, KJ .(2011).VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY.ASTROPHYSICAL JOURNAL,730(1).
MLA Li KJ,et al."VARIATIONS OF SOLAR ROTATION AND SUNSPOT ACTIVITY".ASTROPHYSICAL JOURNAL 730.1(2011).
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