Skin-effect approximation of a full sphere for a large radius-frequency product (cosmic situations)

In a previous paper (Zollmann S., Schmutzer E., Kluge G., Czech. J. Phys. B29 (1979), 1224) the quasistationary exact theory of the skin effect of a conducting spherical shell was developed. The mathematical structures for the field functions in the interior, shell, and exterior are rather complicated. For a better understanding of the physical results, which above all are interesting for the polarity reversals of magnetic stars, the exact solutions are here approximated for a rather large radius-frequency product (radius and frequency enter in a characteristic combination). As a result radial electromagnetic waves with interesting characteristics occur in the sphere. Numerical estimates are performed.We thank Dr. G. Kluge very much for his discussions on this problem.