Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cemda..64..363c&link_type=abstract
Celestial Mechanics and Dynamical Astronomy, Volume 64, Issue 4, pp.363-381
Astronomy and Astrophysics
Astronomy
6
Periodic Orbits, Stability And Instability, Homoclinic Tangle
Scientific paper
We study the distribution of regular and irregular periodic orbits on a Poincaré surface of section of a simple Hamiltonian system of 2 degrees of freedom. We explain the appearance of many lines of periodic orbits that form Farey trees. There are also lines that are very close to the asymptotic curves of the unstable periodic orbits. Some regular orbits, sometimes stable, are found inside the homoclinic tangle. We explain this phenomenon, which shows that the homoclinic tangle does not cover the whole area around an unstable orbit, but has gaps. Inside the lobes only irregular orbits appear, and some of them are stable. We conjecture that the opposite is also true, i.e. all irregular orbits are inside lobes.
Contopoulos George
Grousouzakou E.
Polymilis C.
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