Solar oscillations - Generation of a g-mode by two p-modes

Details Solar oscillations - Generation of a g-mode by two p-modes Solar oscillations - Generation of a g-mode by two p-modes

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...319..966w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 319, Aug. 15, 1987, p. 966-970.

Physics

Plasma Physics

4

Equations Of Motion, Resonant Frequencies, Solar Oscillations, Stellar Interiors, Coupling, Eigenvectors, Energy Transfer, Nonlinear Systems, Plasma Physics

Scientific paper

Three modes of solar oscillations can be coupled resonantly by the nonlinear terms in the equations of motion. A general integral for the coupling rate was derived by Dziembowski. The author evaluates the coupling of two p-modes, of nearly identical frequencies, so as to generate a g-mode. The coupling occurs primarily in the convection zone. A rather select set of g-modes of suitably low order and degree and with weak linear damping may grow, but the modes saturate when surface amplitudes are still unobservably small.

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