Context: The old question of whether the solar dynamo is synchronized by the tidal forces of the orbiting planets has recently received renewed interest, both from the viewpoint of historical data analysis and in terms of theoretical and numerical modelling. Aims: We aim to contribute to the solution of this longstanding puzzle by analyzing cosmogenic radionuclide data from the last millennium. Methods: We reconsider a recent time-series of $^{14}$C-inferred sunspot data and compare the resulting cycle minima and maxima with the corresponding conventional series down to 1610 A.D., enhanced by Schove's data before that time. Results: We find that, despite recent claims to the contrary, the $^{14}$C-inferred sunspot data are well compatible with a synchronized solar dynamo, exhibiting a relatively phase-stable period of 11.07 years, which points to a synchronizing role of the spring tides of the Venus-Earth-Jupiter system.
On the weak synchronization of a nonlinear solar dynamo oscillator by coherent planetary timing
Académie des Sciences, Institut de France（法兰西科学院，法兰西学院）；Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences（俄罗斯科学院地震预测理论与数学地球物理研究所）；Accademia Nazionale delle Scienze detta dei XL（XL国家科学学院）；DeepField Sensing；Muséum National d’Histoire Naturelle, CNRS, UMR 7196, INSERM U1154（法国国家自然历史博物馆，CNRS，UMR 7196，INSERM U1154）；Sorbonne Université, CNRS, METIS, UMR 7619（索邦大学，CNRS，METIS，UMR 7619）
Coexisting Tayler instability-driven dynamos in radiative zones: New dynamo solution and its impacts on stellar physics
Université de Genève（日内瓦大学）；Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（爱因斯坦研究所））；IRAP, Université de Toulouse, CNRS, CNES, UPS（图卢兹大学 IRAP 研究所）；Institut Universitaire de France (IUF)（法国高等研究院）
Synchronization of Small-scale Magnetic Features, Blinkers, and Coronal Bright Points
我们研究了不同的瞬变现象之间的关系，如在304 ° C拍摄的图像中检测到的闪光灯，在193 ° C的极紫外日冕亮点（ECBP），在94 ° C的AIA上的X射线日冕亮点（XCBP），和HMI在10年的太阳活动周24期间观测到的磁特征。采用自动识别方法检测暂态过程，并采用YAFTA算法提取磁场特征。使用10年的数据，我们分别检测到总共7，483，827个眨眼，2，082，162个ECBP和1，188，839个XCBP，其出生率约为$1.1\times10^{-18}$ ${\rm m}^{-2}{\rm s}^{-1}$，$3.8\times10^{-19}$ ${\rm m}^{-2}{\rm s}^{-1}$和$1.5\times10^{-19}$ ${\rm m}^{-2}{\rm s}^{-1}$。我们发现80%的Blinkers位于超颗粒的边界，其中57%（34%）与ECBPs（XCBPs）有关。我们进一步发现，约61 - 80%的瞬变与宁静太阳中的孤立磁极有关，并且\textbf{the normalized maximum intensities of the transients are correlated with photospheric magnetic flux of poles}服从幂律.这些结果显著地表明，这些瞬变有一个磁的起源和他们的同步行为提供了进一…
