Chaos in Barred Galaxy Models

Authors: Caranicolas N.D.; Karanis G.I.

Source: Astrophysics and Space Science, Volume 259, Number 1, 1998 , pp. 45-56(12)

Publisher: Springer

Buy & download fulltext article:

Price: $47.00 plus tax (Refund Policy)

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 OHgr increases and finally all orbits become regular. The character of motion is also checked by computing the Liapunov characteristic exponents in all cases.

Language: English

Document Type: Regular paper

Affiliations: 1: Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Thessaloniki, GR-54006 Thessaloniki, Macedonia, Greece

Publication date: 1998-01-01