The Summer Daytime Meteor Streams of 1949 and 1950: I. Measurement of the Radiant Positions and Activity

Abstract

Radio echo observations of the summer daytime meteor streams, first investigated in 1947 and 1948, have been continued with an apparatus specifically designed for continuous operation and routine radiant determination. Details of the radiant position and development of each daytime stream in 1950 have been recorded, together with information on the great sporadic activity which occurs during the same period. It is now possible to identify three permanent streams which have appeared regularly each year since their discovery. In addition to the permanent streams there are numerous streams which, although rich in meteors, are of a transient or long-period character.