Flare Activity, Sunspot Motions, and the Evolution of Vector Magnetic Fields in Hale Region 17244

摘要

The magnetic and dynamical circumstances leading to the 1B/M4 flare of November 5, 1980 are studied, a strong association is found between the buildup of magnetic shear and the onset of flare activity within the active region. The developement of shear, as observed directly in vector magnetrograms, is consistent in detail with the dynamical history of the active region and identifies the precise location of the optical and hard x ray kernels of the flare emission. Keywords: Solar magnetic fields; Solar flares; Sunspots; Reprints.