Chaos and elliptical galaxies

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Title: Chaos and elliptical galaxies
Author: Merritt, David
Abstract: Recent results on chaos in triaxial galaxy models are reviewed. Central mass concentrations like those observed in early-type galaxies - either stellar cusps, or massive black holes - render most of the box orbits in a triaxial potential stochastic. Typical Liapunov times are 3-5 crossing times, and ensembles of stochastic orbits undergo mixing on time scales that are roughly an order of magnitude longer. The replacement of the regular orbits by stochastic orbits reduces the freedom to construct self- consistent equilibria, and strong triaxiality can be ruled out for galaxies with sufficiently high central mass concentrations.
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/1352
Publishers URL: http://dx.doi.org/10.1007/BF00051605
Date: 1996

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