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Nearly-integrable dissipative systems and celestial mechanics

机译:几乎可积分的耗散系统和天体力学

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摘要

The influence of dissipative effects on classical dynamical models of Celestial Mechanics is of basic importance.We introduce the reader to the subject, giving classical examples found in the literature, like the standard map, the H′enon map, the logistic mapping. In the framework of the dissipative standard map, we investigate the existence of periodic orbits as a function of the parameters.We also provide some techniques to compute the breakdown threshold of quasi-periodic attractors. Next, we review a simple model of Celestial Mechanics, known as the spin-orbit problem which is closely linked to the dissipative standard map. In this context we present the conservative and dissipative KAM theorems to prove the existence of quasi-periodic tori and invariant attractors.We conclude by reviewing some dissipative models of Celestial Mechanics. Among the rotational dynamics we consider the Yarkovsky and YORP effects; within the three-body problem we introduce the so-called Stokes and Poynting–Robertson effects.
机译:耗散效应对天体力学经典动力学模型的影响至关重要。我们向读者介绍该主题,并提供文献中发现的经典示例,例如标准图,H'enon图和逻辑映射。在耗散标准图的框架中,我们研究了周期性轨道作为参数的函数的存在。我们还提供了一些技术来计算准周期吸引子的分解阈值。接下来,我们回顾一个简单的天体力学模型,称为自旋轨道问题,该模型与耗散标准图密切相关。在此背景下,我们提出了保守的和耗散的KAM定理,以证明准周期环面和不变吸引子的存在。最后,我们回顾了一些天体力学的耗散模型。在旋转动力学中,我们考虑了Yarkovsky和YORP效应。在三体问题中,我们介绍了所谓的斯托克斯效应和珀因廷-罗伯逊效应。

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