Chaos in Barred Galaxy Models |
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Authors: | ND Caranicolas GI Karanis |
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Institution: | (1) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Thessaloniki, GR-54006 Thessaloniki, Macedonia, Greece |
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Abstract: | We investigate the regular and chaotic motion in a model potential found using the recent developments of the Inverse Problem
of Dynamics. The potential describes the motion in the central parts of a barred galaxy. In the absence of rotation chaotic
motion is observed when the perturbation strength is near the escape perturbation for a fixed value of the energy. In the
rotating cases one observes that the area of chaotic motion on the surface of section decreases as the angular velocity Ω
increases and finally all orbits become regular. The character of motion is also checked by computing the Liapunov characteristic
exponents in all cases.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | |
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