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Conference Papers Year : 1993

Stability of spherical stellar systems by symplectic methods : numerical test

Jérôme Perez
Jean-Michel Alimi
Jean-Jacques Aly
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Abstract

We present a numerical analysis of a class of radial-anisotropic collisonless spherical stellar systems in order to understand the physical ori¬gin of the radial-orbit instability. This work is motivated by new analytical results based on the symplectic formulation of a generalised energy varia¬tionnal technique. We have obtained a first confirmation that the stability of such systems is governed by their aptitude to receive a certain class of perturbations.
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Dates and versions

hal-01141498 , version 1 (13-04-2015)

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  • HAL Id : hal-01141498 , version 1

Cite

Jérôme Perez, Jean-Michel Alimi, Jean-Jacques Aly, Hans Jochen Scholl. Stability of spherical stellar systems by symplectic methods : numerical test. N-body problems and gravitational dynamics, F. Combes & L. Athanassoula, Mar 1993, Aussois, France. ⟨hal-01141498⟩
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