Resonant coupling between solar gravity modes

Details Resonant coupling between solar gravity modes Resonant coupling between solar gravity modes

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...82..259d&link_type=abstract

(International Astronomical Union and Akademiia Nauk SSSR, Colloquium on Problems of Solar and Stellar Oscillations, 66th, Nauch

Physics

23

Coupled Modes, Solar Gravitation, Solar Oscillations, Coupling Coefficients, Dynamic Stability, Nonlinearity, Spherical Harmonics

Scientific paper

It is shown that in consequence of the parameteric resonance, g modes of low spherical harmonic degree l are strongly coupled to the modes of high degree. The coupling limits the growth of low l modes to very small amplitudes. For g1, l = 1 mode, the final amplitude of the radial velocity is of the order of 10 cm s-1. A mixing of solar core as a result of a finite-amplitude development of linear instability of this mode is thus highly unlikely.

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