Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987colo.reptr....b&link_type=abstract
Final Report Colorado Univ., Boulder. Astrophysical, Planetary, and Atmospheric Sciences.
Astronomy and Astrophysics
Astrophysics
Asymmetry, Convection, Luminosity, Oscillations, Sunspots, Torque, Fast Fourier Transformations, Power Spectra, Rotation, Stress Tensors
Scientific paper
Various properties of r-modes that would occupy the solar convection zone were computed. Values were calculated for the energy loss from the coefficient of eddy viscosity using the solar convective zone model. Viscous damping is strong and removes one-third or more of the mode energy each oscillation period. A fast Fourier transform (FFT) of daily Zurich sunspot number was made for eight sets of data, taken near peaks of solar cycles 14 to 21. The FFTs were evaluated with the Wolff and Hickey model. The horizontal component of Fh of the force exerted by a planetary torque was calculated to see is it works on the photospheric layers at a rate comparable to 0.000001 solar luminosity. The time span of torque in the external sector of the Sun was calculated. The duration of the effect of two planets in conjunction on sunspot numbers was examined. The north-south asymmetry of solar activity was investigated.
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