Abstract

We examined cycles of solar activity reconstructed based on the number of auroras observed at the middle and low latitudes in 1000–1700. We used a wavelet analysis method. Variations in the Earth’s magnetic moment influence the propagation of cosmic particles that cause auroras. We took this influence into account when reconstructing solar activity based on variations in the number of auroras. The analysis was carried out for a combined series: the reconstructed series of sunspots SN (1000–1700) and the modern SN series (1700–2000). Two dominant components were found in the SN spectrum: the near-centennial Gleissberg cycle, which consists of two modes with periods of 60–80 and 90–140 years, and a nearly two-century Suess cycle. When the the contribution of the magnetic moment is taken into account, the amplitudes of the periods of the Gleissberg group in the SN spectrum increase as compared to the initial spectrum of the aurora number, and their intensity approaches the intensity of the Suess variation. Analysis of changes in the amplitudes and periods of all cycles showed the presence of long-wave modulation with a possible period ranging from 1300 to 1700 years. As for the Gleissberg cycles, a frequency modulation with a period of 216 years by the Suess cycle was also revealed. We believe that the ~200-year component has an extrasolar nature and may reflect the result of the duplication of the fundamental frequency (11 and 22-year cycles) on multiple modulator modes.

中文翻译：

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考虑到地球主磁场在 1000-2000 年的贡献，根据极光统计重建的太阳活动周期

摘要

我们研究了根据 1000-1700 年在中低纬度观测到的极光数量重建的太阳活动周期。我们使用了小波分析方法。地球磁矩的变化会影响导致极光的宇宙粒子的传播。我们在根据极光数量的变化重建太阳活动时考虑了这种影响。对组合系列进行了分析：重建的太阳黑子系列SN（1000-1700）和现代SN系列（1700-2000）。在SN中发现了两个主要成分频谱：近百年的格莱斯堡周期，由周期为 60-80 年和 90-140 年的两种模式组成，以及近两个世纪的苏斯周期。当考虑磁矩的贡献时，SN中Gleissberg群周期的幅值与极光数的初始光谱相比，光谱增加，并且它们的强度接近苏斯变化的强度。对所有周期的振幅和周期变化的分析表明，存在可能周期为 1300 至 1700 年的长波调制。至于格莱斯贝格循环，还揭示了苏斯循环周期为 216 年的频率调制。我们认为，约 200 年的分量具有太阳系外性质，可能反映了基频（11 年和 22 年周期）在多个调制器模式下重复的结果。