Abstract

A summary of all available radio observations made during the 1991 June campaign of the MAX '91/Flare 22 program will be presented. The presentation will be concerned primarily with millimeter wavelength (BIMA and Nobeyama ) and centimeter wavelengths (Owens Valley and Nobeyama) observations. Emphasis will be given to the question of millimeter observations as a diagnostic for Mev electrons in solar flares (gamma ray flares --- BATSE and OSSE data), millimeter emission occurring at the steep rise phase of hard X-ray emitting electrons (BATSE data) and delay of millimeter emission onset and 25-100 Kev X-rays (BATSE data). Implications of these results for generation of millimeter emission and particle acceleration process will be discussed. The Nobeyama data consist of non-imaging patrol observations at several frequencies in the frequency range 1--80 GHz, and Owens Valley data were obtained using the frequency agile interferometer in the frequency range 1--18 GHz. Light curves and spectral information of the most energetic flares will be presented.