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Mode Selection and Other Nonlinear Phenomena in Stellar Oscillations

Published online by Cambridge University Press:  12 April 2016

W.A. Dziembowski
W.A. Dziembowski*
Affiliation:
Copernicus Astronomical Center, Warszawa, Poland

Abstract

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Nonlinear effects determining the amplitudes of unstable modes of oscillations in stellar modes, are reviewed. The two basic processes - saturation of the driving mechanism and resonant mode coupling - are discussed within the framework of the amplitude equation formalism. There are difficult problems in the theory of multiple mode interaction that must be solved to make a prediction of amplitude spectra possible. The observed spectra for δ Scu stars and other multiperiodic variables, exhibit no simple pattern that would suggest a solution of the theoretical problems.

Information

Type
VI. Asteroseismology: theory
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 521 - 534
Copyright
Copyright © Astronomical Society of the Pacific 1993

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