Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cemda..90..307n&link_type=abstract
Celestial Mechanics & Dynamical Astronomy, Volume 90, Issue 3-4, pp. 307-330
Astronomy and Astrophysics
Astronomy
5
Mean–Motion Resonances, Hamiltonian Systems, Adiabatic Chaos, Mean-Motion Resonances
Scientific paper
A simple approximate model of the asteroid dynamics near the 3:1 mean-motion resonance with Jupiter can be described by a Hamiltonian system with two degrees of freedom. The phase variables of this system evolve at different rates and can be subdivided into the `fast' and `slow' ones. Using the averaging technique, wisdom obtained the evolutionary equations which allow to study the long-term behavior of the slow variables. The dynamic system described by the averaged equations will be called the `Wisdom system' below. The investigation of the, wisdom system properties allows us to present detailed classification of the slow variables' evolution paths. The validity of the averaged equations is closely connected with the conservation of the approximate integral (adiabatic invariant) possessed by the original system. Qualitative changes in the behavior of the fast variables cause the violations of the adiabatic invariance. As a result the adiabatic chaos phenomenon takes place. Our analysis reveals numerous stable periodic trajectories in the region of the adiabatic chaos.
Neishtadt A. I.
Sidorenko Vladimir
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