Decametric radio spectra of some galaxies in clusters

Abstract

Observations of 12 radio sources identified with clusters of galaxies were made 1983-84 with the decameter wave radio telescope at Gauribidanur. The measured flux densities at 34.5 MHz are combined with other low frequency measurements to derive their radio spectra. It is found that the average spectral index in the frequency range 34.5 MHz to 408 MHz is -1.32, much steeper than the average of extragalactic sources.