Resonant Orbits in Triaxial Galaxies

Details Resonant Orbits in Triaxial Galaxies Resonant Orbits in Triaxial Galaxies

1999-03-30

arxiv.org/abs/astro-ph/9903452v2

Astronomy and Astrophysics

Astrophysics

20 Latex pages, 11 Postscript figures. Submitted to The Astronomical Journal

Scientific paper

10.1086/301012

Box orbits in triaxial potentials are generically thin, that is, they lie close in phase space to a resonant orbit satisfying a relation of the form l\omega_1 +m\omega_2+n\omega_3=0 between the three fundamental frequencies. Resonant orbits are confined to a membrane; they play roughly the same role, in three dimensions, that closed orbits play in two. Stable resonant orbits avoid the center of the potential; orbits that are thick enough to pass near the center are typically stochastic. Very near the center, where the gravitational potential is dominated by the black hole, resonant orbits continue to exist, including at least one family whose elongation is parallel to the long axes of the triaxial figure.

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