Onset of Secular Chaos in Planetary Systems: Period Doubling & Strange Attractors

Details Onset of Secular Chaos in Planetary Systems: Period Doubling & Strange Attractors Onset of Secular Chaos in Planetary Systems: Period Doubling & Strange Attractors

2011-06-14

arxiv.org/abs/1106.2590v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

9 pages, 7 figures, accepted for publication in Celestial Mechanics and Dynamical Astronomy

Scientific paper

As a result of resonance overlap, planetary systems can exhibit chaotic motion. Planetary chaos has been studied extensively in the Hamiltonian framework, however, the presence of chaotic motion in systems where dissipative effects are important, has not been thoroughly investigated. Here, we study the onset of stochastic motion in presence of dissipation, in the context of classical perturbation theory, and show that planetary systems approach chaos via a period-doubling route as dissipation is gradually reduced. Furthermore, we demonstrate that chaotic strange attractors can exist in mildly damped systems. The results presented here are of interest for understanding the early dynamical evolution of chaotic planetary systems, as they may have transitioned to chaos from a quasi-periodic state, dominated by dissipative interactions with the birth nebula.

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