Some theoretical remarks on solar oscillations

The properties of the- linear modes of oscillation of a nonrotating nonmagnetic star, with particular reference to the sun, are briefly described. The most likely mechanisms by which they might be excited are reviewed, and it is concluded that stochastic excitation by turbulence is probably the dominant mechanism that drives the solar five minute oscillations. Phase coherence of one of the components of the SCLERA diameter data is illustrated, and the new five minute oscillations in the Birmingham whole-disk Doppler data are discussed. Finally some of the problems raised by conflicting evidence concerning the structure of the sun are aired, but not resolved.

[1]  D. O. Gough,et al.  Pulsations of model RR Lyrae stars , 1979 .

[2]  B. Schmieder.  Wave propagation in the photosphere , 1976 .

[3]  P. Goldreich,et al.  Solar seismology. I - The stability of the solar p-modes , 1977 .

[4]  Y. Osaki,et al.  Nonradial Oscillations of a 10 Solar Mass Star in the Main-Sequence Stage , 1975 .

[5]  A. Severny,et al.  Observations of oscillations of the Sun , 1978 .

[6]  Owen Gingerich,et al.  The Harvard-Smithsonian reference atmosphere , 1971 .

[7]  J. Wilcox,et al.  Observations of solar oscillations with periods of 160 minutes , 1979, Nature.

[8]  J. Eddy.  The New Solar Physics , 1979 .

[9]  Serge Dumont,et al.  Pleins feux sur la physique solaire , 1978 .

[10]  A. Severny,et al.  Observations of solar pulsations , 1976, Nature.

[11]  J. Eisenfeld.  A completeness theorem for an integro-differential operator , 1969 .

[12]  E. Rhodes,et al.  The sensitivity of nonradial p mode eigenfrequencies to solar envelope structure , 1977 .

[13]  T. Brown,et al.  Long-period oscillations of the apparent solar diameter: observations. , 1978 .

[14]  Roger K. Ulrich,et al.  The Five-Minute Oscillations on the Solar Surface , 1970 .

[15]  F. Deubner,et al.  Observations of low wavenumber non radial eigenmodes of the sun , 1975 .

[16]  T. G. Cowling,et al.  The non-radial oscillations of polytropic stars , 1941 .

[17]  T. Caudell,et al.  Solar oscillations - The influence of the sun's outer layers on their detection , 1978 .

[18]  C. Wolff.  The five-minute oscillations as nonradial pulsations of the entire sun. , 1972 .

[19]  Harry L. Swinney,et al.  The transition to turbulence , 1978 .

[20]  N. Phillips,et al.  Scale Analysis of Deep and Shallow Convection in the Atmosphere , 1962 .

[21]  J. R. Brookes,et al.  Observation of free oscillations of the Sun , 1976, Nature.

[22]  P. Goldreich,et al.  Solar seismology. II - The stochastic excitation of the solar p-modes by turbulent convection , 1977 .

[23]  C. McLeod,et al.  The latest results of the velocity spectroscopy of the sun , 1980 .

[24]  T. Brown,et al.  Recent Solar Oblateness Observations: Data, Interpretation, and Significance for Experimental Relativity , 1976 .

[25]  Carl Eckart,et al.  Hydrodynamics of oceans and atmospheres , 1960 .

[26]  M. O. Olowo-okorun,et al.  Gastrin Activity in the Chicken Proventriculus , 1973, Nature.

[27]  Evidence for a solar distortion rotating with a period of 12.2 days , 1976 .

[28]  E. Rhodes,et al.  Solar p-mode oscillations as a tracer of radial differential rotation , 1979 .