Physics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980cpsp.book..665c&link_type=abstract
In NASA. Goddard Space Flight Center Current Probl. in Stellar Pulsation Instabilities p 665-675 (SEE N80-25229 15-90)
Physics
1
Periodic Variations, Power Spectra, Solar Oscillations, Solar Rotation, Azimuth, Eigenvectors, Finite Element Method, Fourier Transformation
Scientific paper
The coherent properties of six oscillations over a two week period in which seven days of equatorial diameter measurements were analyzed, are confirmed by the addition of an extra day of data. The two large 1 (the principal order number in the spherical harmonic expansion of the eigenfunction) g-mode oscillations may be candidates for the slowly rotating mode locked structures. For the four low frequency p-modes, periodic nature is observed in the daily power levels, varying with periods of several days. This is attributed to beating between rotationally split m states for a given 1 value. Nonradial modes are a major contribution to the observed solar oscillations. The nonradial character of the observed modes allows the depth dependence of the internal solar rotation to be investigated.
Caudell Thomas P.
Hill Adrian H.
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