
arXiv: 1309.1280
This paper demonstrates the existence of twistless tori and the associated reconnection bifurcations and meandering curves in the planar circular restricted three-body problem. Near the Lagrangian equilibrium $\mathcal{L}_4$ a twistless torus is created near the tripling bifurcation of the short period family. Decreasing the mass ratio leads to twistless bifurcations which are particularly prominent for rotation numbers 3/10 and 2/7. This scenario is studied by numerically integrating the regularised Hamiltonian flow, and finding rotation numbers of invariant curves in a two-dimensional Poincaré map. To corroborate the numerical results the Birkhoff normal form at $\mathcal{L}_4$ is calculated to eighth order. Truncating at this order gives an integrable system, and the rotation numbers obtained from the Birkhoff normal form agree well with the numerical results. A global overview for the mass ratio $μ\in (μ_4, μ_3)$ is presented by showing lines of constant energy and constant rotation number in action space.
Rotation numbers and vectors, Normal forms for dynamical systems, Three-body problems, vanishing twist, FOS: Physical sciences, Mathematical Physics (math-ph), Dynamical Systems (math.DS), Nonlinear Sciences - Chaotic Dynamics, circular restricted three-body problem, Dynamical aspects of twist maps, normal forms, FOS: Mathematics, reconnection bifurcation, Bifurcation problems for finite-dimensional Hamiltonian and Lagrangian systems, Mathematics - Dynamical Systems, Chaotic Dynamics (nlin.CD), Poincaré's surface of section, Mathematical Physics
Rotation numbers and vectors, Normal forms for dynamical systems, Three-body problems, vanishing twist, FOS: Physical sciences, Mathematical Physics (math-ph), Dynamical Systems (math.DS), Nonlinear Sciences - Chaotic Dynamics, circular restricted three-body problem, Dynamical aspects of twist maps, normal forms, FOS: Mathematics, reconnection bifurcation, Bifurcation problems for finite-dimensional Hamiltonian and Lagrangian systems, Mathematics - Dynamical Systems, Chaotic Dynamics (nlin.CD), Poincaré's surface of section, Mathematical Physics
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