The Decimetre Wavelength Radiation Associated With Type IV Solar Radio Bursts

Abstract

Results are presented of high-resolution studies made with the Christiansen grating interferometer of eight 21-cm burst events known to coincide with type IV metrewavelength events. The decimetre wavelength sources remained in the lower corona in regions widely separated from the sources of simultaneous metre-wavelength emission. Physical measurements of the eight decimetre sources are also given: brightness temperatures (10' to 10· OK), apparent diameters (2 to 5' of arc) and heights (approximately 50,000 km above photosphere).