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CHAOS IN THE TEST PARTICLE ECCENTRIC KOZAI-LIDOV MECHANISM

机译:测试颗粒偏心的小寨-里多夫机制中的混乱

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The Kozai-Lidov mechanism can be applied to a vast variety of astrophysical systems involving hierarchical three-body systems. Here, we study the Kozai-Lidov mechanism systematically in the test particle limit at the octupole level of approximation. We investigate the chaotic and quasi-periodic orbital evolution by studying the surfaces of section and the Lyapunov exponents. We find that the resonances introduced by the octupole level of approximation cause orbits to flip from prograde to retrograde and back as well as cause significant eccentricity excitation, and chaotic behavior occurs when the mutual inclination between the inner and the outer binary is high. We characterize the parameter space that allows large amplitude oscillations in eccentricity and inclination.
机译:Kozai-Lidov机制可以应用于涉及分层三体系统的多种天体系统。在这里,我们在近似八极水平的测试粒子极限中系统地研究了Kozai-Lidov机制。我们通过研究截面和李雅普诺夫指数的表面来研究混沌和准周期轨道的演化。我们发现,由八极近似所引入的共振会导致轨道从前进到逆行以及向后翻转,并引起明显的偏心激励,并且当内外二进制数之间的相互倾角很高时,就会发生混沌行为。我们描述了参数空间的特征,该参数空间允许大幅度的偏心率和倾斜度振荡。

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