Measurements made of high-energy X rays accompanying three class 2⁺solar flares

Abstract

During the summer of 1959 rocket measurements were made of high-energy X rays accompanying three class 2+ solar flares. The rocket measurements began August 24, 1959, at 22:47 UT, August 31, 1959, at 22:53 UT, and September 1, 1959, at 17:00 UT. Four measurements were also made during times in which no flare activity occurred on the sun, but which were typical of sunspot maximum conditions. The data from these flights have been only partly analyzed, but many of the main conclusions can be drawn from these preliminary results.