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| Paper: |
Mode selection and other nonlinear phenomena in stellar oscillations |
| Volume: |
40, Inside the Stars, IAU Colloquium 137 |
| Page: |
521 |
| Authors: |
Dziembowski, W. A. |
| Abstract: |
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 Delta Scu stars and other multiperiodic variables exhibit no simple pattern that would suggest a solution of the theoretical problems. |
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