Periodicities matching planetary cycles have been argued to be detected in key geophysical time series. In general, these periodicities were indirectly attributed to a planetary influence on solar activity. This supposes that planetary gravity affects the internal functioning of the Sun's dynamo, that is, the planetary hypothesis (PH) of the solar cycles. The Earth's heliocentric dynamics already includes the planetary gravitational effects on the Sun. Taking into account this fact, these periodicities, ultimately attributed to possible planetary modulations of the solar activity, could have a more direct origin in cyclical changes in the relative Sun-Earth geometry, but then, wrongly or partially explained invoking internal solar changes. We present an original decomposition analysis of the high-precision ephemeris DE431 from NASA/JPL in order to obtain and classify the most important planetary/lunar purely periodic changes of the Earth's orbital movement at sub-Milanković scales. A comprehensive list of cyclic changes of the Earth's orbital parameters involved in the relative Sun-Earth position and the Earth's speed around the Sun is given. We show that these particular geophysical quasi-periods are identifiable in the cyclic oscillations of these orbital parameters. Since the Earth's movement in space physically affects the manner in which the solar radiant flux reaches the planet, these oscillations provide, unlike the PH, a clear, causal, and testable link for their possible attribution.

中文翻译：

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在日地研究中检测到的某些周期性的可能起源：地球的轨道运动

与行星周期相匹配的周期性被认为可以在关键的地球物理时间序列中检测到。一般来说，这些周期性间接归因于行星对太阳活动的影响。这假设行星引力会影响太阳发电机的内部功能，即行星假说(PH) 的太阳周期。地球的日心动力学已经包括行星对太阳的引力效应。考虑到这一事实，这些周期性最终归因于太阳活动可能的行星调制，可能更直接地起源于相对日地几何结构的周期性变化，但随后错误地或部分地解释了调用内部太阳变化。我们展示了来自 NASA/JPL 的高精度星历 DE431 的原始分解分析，以获取和分类地球轨道运动在亚米兰科维奇尺度下最重要的行星/月球纯周期性变化。给出了涉及日地相对位置和地球绕太阳速度的地球轨道参数循环变化的综合列表。我们表明，这些特定的地球物理准周期在这些轨道参数的循环振荡中是可识别的。由于地球在太空中的运动会在物理上影响太阳辐射通量到达地球的方式，因此与 PH 不同，这些振荡为其可能的归因提供了清晰、因果和可测试的联系。