Nonlinear two-mode coupling models of radial stellar oscillations

Details Nonlinear two-mode coupling models of radial stellar oscillations Nonlinear two-mode coupling models of radial stellar oscillations

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42..405s&link_type=abstract

Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 3, 1990, p. 405-418.

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Coupled Modes, Dynamical Systems, Nonlinear Systems, Stellar Models, Stellar Oscillations, Branching (Mathematics), Computational Astrophysics, Numerical Analysis

Scientific paper

The two-mode coupling of a stellar model has been studied by using coupled van der Pol oscillators. Numerical studies show subharmonic phase-locking in their coupling oscillations. Period-doubling bifurcation accompanied by beats develops with the changes of a parameter. It is suggested that the observed double-periodic stellar pulsations might be subharmonic phase-locking, and not the superposition of two nonsynchronized oscillations.

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