Non-linear stellar oscillations - Two-mode interactions

Details Non-linear stellar oscillations - Two-mode interactions Non-linear stellar oscillations - Two-mode interactions

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...112...35p&link_type=abstract

Astronomy and Astrophysics, vol. 112, no. 1, Aug. 1982, p. 35-48.

Computer Science

Numerical Analysis

23

Hamiltonian Functions, Numerical Analysis, Stellar Motions, Stellar Oscillations, Variable Stars, Eddington Approximation, Kolmogoroff Theory, Nonlinearity, Power Spectra, Resonance

Scientific paper

Numerical experiments reported in this paper demonstrate that the adiabatic non-linear coupling between pairs of adiabatic radial linear modes can lead to chaotic stellar oscillations. Our results thus corroborate a prediction based on KAM theory (Perdang, 1978). It is observed that the new class of chaotic motions continue to display an approximate periodicity, the amplitude undergoing however long time scale random fluctuations.

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