Abstract
Oscillations of the solar interior (linear g-modes) may be strongly driven by the collective influence of all the modes upon the nuclear reactions in the core. This heretofore neglected effect could couple the modes, reduce the effective amplitudes near the center, and spatially concentrate most of the oscillation energy into just a portion of the radiative interior. If operating at sufficient strength, this can reverse the conventional conclusion, drawn from single mode calculations, that almost all solar g-modes are damped. Furthermore, it would put the theory into rough harmony with three otherwise troubling observations: (1) the “low” neutrino flux measured by Davis (1978), (2) the high correspondence found by Wolff (1976) between recurrence periods in solar activity and the rotational beat periods of g modes, and (3) the fluctuations in the sun's diameter which imply g-mode activity at high angular harmonics (Hill and Caudell 1979). A nonlinear expression is derived for the local rate of work done on an array of oscillation modes by the nuclear reactions. Three additional tests of the model are suggested.
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Wolff, C.L. (1980). The collective excitation of g-modes in the sun. In: Hill, H.A., Dziembowski, W.A. (eds) Nonradial and Nonlinear Stellar Pulsation. Lecture Notes in Physics, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-09994-8_25
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DOI: https://doi.org/10.1007/3-540-09994-8_25
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