Diffuse echo bursts at 34.5 MHz

Abstract

The solar radio bursts during their propagation towards the earth are refracted, scattered, reflected and absorbed. The combination of these effects play a role in determining the source size, position, brightness temperature and time profile of solar bursts at the earth. The sporadic radio emission of the sun in some cases reveal features which are called “echo like”. These echo bursts occur during periods of decameter storms. Abranin et al (1982, 1984) first reported these diffuse echo bursts at 25 MHz. We present here further observations on these bursts at a frequency of 34.5 MHz.