Temporal Evolution of the Rotation of the Interplanetary Magnetic Field Bx, By, and Bz Components
文献类型：期刊论文
| 作者 | Xiang,N. B.1,2,3; Ning,Z. J.3; Li,F. Y.4,5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 896期号:1 |
| 关键词 | Interplanetary magnetic fields |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab91bc |
| 英文摘要 | Abstract The daily interplanetary magnetic field (IMF) Bx, By, and Bz components from 1967 January 1 to 2018 December 31 listed in the OMNI database are used to investigate their periodicity and study temporal variation of their rotation cycle lengths through continuous wavelet transform, autocorrelation, and cross-correlation analyses. The dominant rotation period in each of the daily Bx, By, and Bz components is 27.4 days, implying the existence of rotational modulation in the three time series. The dependence of the rotation cycle lengths for both Bx and By components on solar cycle phase almost shows the same result. The rotation cycle lengths for both Bx and By components increase from the start to the first year of a new Schwabe cycle, then decrease gradually from the first to the fourth year, and finally fluctuate around the 27.4-day period within a small amplitude from the fourth year to the end of the Schwabe solar cycle. For the Bz component, its rotation cycle length does not show such a solar cycle variation. The significant periods in the variation of Bx rotation are 2.9, 3.4, 4.3, 4.9, 10.5, and 11.9 yr, and there exist significant periods of 3.4, 9.9, and 14.1 yr in the variation of By rotation. The relationship of solar activity with Bx and By components is complex. The possible mechanisms for the temporal variation of the rotation period of the three components are discussed. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-896-1-AB91BC |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/63534]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, People's Republic of China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; nanbin@ynao.ac.cn 3.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Nanjing 210008, People's Republic of China 4.School of Earth and Space Sciences, Peking University, Beijing 100871, People's Republic of China 5.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Xiang,N. B.,Ning,Z. J.,Li,F. Y.. Temporal Evolution of the Rotation of the Interplanetary Magnetic Field Bx, By, and Bz Components[J]. The Astrophysical Journal,2020,896(1). |
| APA | Xiang,N. B.,Ning,Z. J.,&Li,F. Y..(2020).Temporal Evolution of the Rotation of the Interplanetary Magnetic Field Bx, By, and Bz Components.The Astrophysical Journal,896(1). |
| MLA | Xiang,N. B.,et al."Temporal Evolution of the Rotation of the Interplanetary Magnetic Field Bx, By, and Bz Components".The Astrophysical Journal 896.1(2020). |
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来源：国家天文台
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