Physics
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.172..535w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 172, Sept. 1975, p. 535-543.
Physics
4
Astronomical Models, Convective Flow, Magnetohydrodynamic Waves, Solar Atmosphere, Solar Magnetic Field, Sunspots, Chromosphere, Plasma Radiation, Solar Corona, Solar Granulation, Solar Physics
Scientific paper
The recent account of the growth and decay of a sunspot by Meyer, Schmidt, Weiss and Wilson is compared with models exhibiting a large emission of Alfven flux. It is shown that a composite model which involves both modified convection and Alfven waves within the sub-surface flux rope can overcome some of the difficulties faced by either type of model independently. It is shown that interactions between convective motions and the flux tubes may give rise to twists in these tubes. The significance of these twists in relation to the decay of the spot magnetic field and the appearance of the moving magnetic features in the moat is discussed. An approximate distribution of the radiative, convective and hydromagnetic energy flux in the neighborhood of a stable l-spot is suggested on the basis of the composite model.
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