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arXiv 2104.05795astro-ph.EPmath.DS
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1/2逆行共振的研究:周期轨道和共振俘获

A study of the 1/2 retrograde resonance: Periodic orbits and resonant capture

M. H. M. Morais, F. Namouni, G. Voyatzis, T. Kotoulas

摘要:

我们描述了质量比为0.001的二维1/2倒共振系统中的周期轨道族,分析了它们的稳定性和分叉成三维周期轨道的可能性。我们解释了周期轨道在绝热共振捕获中所起的作用,特别是如何接近一个稳定的家庭和一个不稳定的家庭与近临界段,与Kozai分离,确定在数值模拟中观察到的不同的共振模式之间的过渡。将稳定、临界和不稳定周期轨道的识别与分析建模、共振捕获模拟和稳定性图的计算相结合,有助于揭示共振的复杂三维结构。

英文摘要:

We describe the families of periodic orbits in the 2-dimensional 1/2 retrograde resonance at mass ratio 0.001, analyzing their stability and bifurcations into 3-dimensional periodic orbits. We explain the role played by periodic orbits in adiabatic resonance capture, in particular how the proximity between a stable family and an unstable family with a nearly critical segment, associated with Kozai separatrices, determines the transition between distinct resonant modes observed in numerical simulations. Combining the identification of stable, critical and unstable periodic orbits with analytical modeling, resonance capture simulations and computation of stability maps helps to unveil the complex 3-dimensional structure of resonances.

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