Papers › The Bogdanov Map: Bifurcations, Mode Locking, and Chaos in a Dissipative System
The Bogdanov Map: Bifurcations, Mode Locking, and Chaos in a Dissipative System
David K. Arrowsmith, Julyan H. E. Cartwright, Alexis N. Lansbury, Colin M. Place
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We investigate the bifurcations and basins of attraction in the Bogdanov map, a planar quadratic map which is conjugate to the H\'enon area-preserving map in its conservative limit. It undergoes a Hopf bifurcation as dissipation is added, and exhibits the panoply of mode locking, Arnold tongues, and chaos as an invariant circle grows out, finally to be destroyed in the homoclinic tangency of the manifolds of a remote saddle point. The Bogdanov map is the Euler map of a two-dimensional system of ordinary differential equations first considered by Bogdanov and Arnold in their study of the versal unfolding of the double-zero-eigenvalue singularity, and equivalently of a vector field invariant under rotation of the plane by an angle 2π. It is a useful system in which to observe the effect of dissipative perturbations on Hamiltonian structure. In addition, we argue that the Bogdanov map provides a good approximation to the dynamics of the Poincar\'e maps of periodically forced oscillators.
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