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Dynamic Catastrophes in Stars

Published online by Cambridge University Press:  30 March 2016

J. Perdang
J. Perdang*
Affiliation:
Institut d’Astrophysique, Universitè de LiègeB-4200 Cointe-Ougrée, Belgium

Extract

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The invariance of the equations of linear stability of a physical system under a change of sign of the dependent variables implies that we cannot foresee, once an instability is detected, in which direction the system will evolve. In the context of radial dynamical stability this means that the linear analysis does not allow us to discriminate between a subsequent contraction or expansion. To fix up the arrow of the evolution beyond the onset of the instability, a nonlinear analysis is required.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 501 - 504
Copyright
Copyright © Cambridge University Press 1980

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