Location of the Sources of 19 Mc/s Solar Bursts

Abstract

By using large aerials in a new way, it has been possible to locate, with considerable accuracy, the sources of 19 Mcls solar bursts. The positions of these sources have been correlated with the positions of optically active regions associated with them, and the radial distances of the radio sources from the centre of the Sun have been deduced. In 1950-1951, 18·3 Mcls bursts came from sources at a radial distance estimated as 3·4Ro ; more reliable data in 1957 indicated that the sources of 19·7 Mcls bursts were at a radial distance of 2· 9Ro It is thought that these measurements give the distances of the fundamental plasma levels in coronal streamers.