论文标题
太阳周期和中期太阳活性振荡的形状
Shape of solar cycles and mid-term solar activity oscillations
论文作者
论文摘要
太阳能活动的演变包括除了众所周知的11年周期外，各种时间尺度范围从几个月到被称为中期振荡的次级循环。它的性质应该得到物理解释。在这项工作中，我们考虑了来自黑子和太阳磁偶极时间序列的5到6年振荡。使用太阳能发电机模型，我们推断出这些变化可能是太阳能活动周期的发电机非线性和非谐波形状的表现。我们得出的结论是，观察到的中期振荡与太阳内部发电机过程的非线性饱和有关。
The evolution of the solar activity comprises, apart from the well-known 11-year cycle, various temporal scales ranging from months up to the secondary cycles known as mid-term oscillations. Its nature deserves a physical explanation. In this work, we consider the 5-to-6 year oscillations as derived both from sunspot and from solar magnetic dipole time series. Using the solar dynamo model, we deduced that these variations may be a manifestation of the dynamo nonlinearities and non-harmonic shape of the solar activity cycles. We conclude that the observed mid-term oscillations are related to the nonlinear saturation of the dynamo processes in the solar interior.
