Force Free Magnetic Fields and Solar Activity.

摘要

This report concerning the prediction of solar flares, centers on devising methods for calculating magnetic field structures in the solar atmosphere. Force-free fields comprise an important class of magnetic-field structures which may be calculated by relaxation techniques. Models of force-free fields with cylindrical symmetry, based on a spherical boundary surface, have been calculated. Evaluation of the energy of such structures provides information about the eruption of closed field patterns to form open current sheets which can then lead to solar flares.