Studies at the McMath-Hulbert Observatory of Radio Frequency Radiation at the Time of Solar Flares

The complex flare phenomenon is described in terms of its photographic aspect on H¿ spectroheliograms, associated prominence activity, terrestrial effects, and the general pattern of radio frequency emission. Flare-associated events at 2800 and 200 mc are reviewed, and the association between flares and the onset of 200-mc noise storms is discussed. Records of 2800 and 200-mc radiation at the time of 277 flares are compared. Flare-events at frequencies less than 200 mc are considered, and a study of 496 flares at 80 mc is summarized. An effort is made to compare reports of dynamic spectra at radio frequencies with flare data and single frequency records. The apparently close association between flares with "major early bursts" at frequencies ¿200 mc and geomagnetic disturbances is discussed.