Some Features of Solar Radio Bursts at around 3000 Mc/s

The nature of solar radio bursts at frequencies around 3000 Mc/s is studied statistically. It is found that the number of bursts does not increase monotonously with decreasing intensity but shows a maximum for bursts with the intensity of 5 to 10 units. (1 unit is 10–22 w.m.–2 (c/s)–1). The number of bursts decreases as I–1,8 for bursts with intensity greater than 5 units, where I is the intensity of a burst. The frequency distribution of the number of bursts over the solar disk is derived. If this frequency distribution is interpreted by assuming an absorbing layer above the source of a burst, the optical thickness of the layer is ab:mt 0.3 or 0.4.