Radio Emission from Comet 1956 h on 600 MC

Radiation from Comet 1956 h has been observed on 600 mc at perihelion. An attempt to identify this emission, which presented a rather stable character, has been made. It appears that this radiation may arise from transitions between fine structure components resulting from A-type doubling of the level J=3/2 of the 2¿3/2 state of CH molecule. The observed flux density leads to a number of molecules of the order of 1030-1031, which is compatible with admitted numbers in cometary atmospheres.