On the nature of compact components of radio sources at 327 MHz

Abstract

The interplanetary scintillation (IPS) survey of about 5000 radio sources carried out during 1992-93 with the Ooty Radio Telescope (ORT) at 327 MHz has resulted in the detection of compact components in about 2700 sources. Angular sizes of the scintillating components have been determined by using IPS technique in the case of 1050 sources which are the strongest scintillators amongst these sources. Information such as spectral index at centimeter wavelengths, optical identification and red shift are available in the literature for a sizeable number of these sources. VLBI maps at centimeter wavelengths are also available for a small number of cases. In this paper we present preliminary results from our investigations on correlations between low frequency compact structures and properties observed at centimeter wavelengths for the strongly scintillating sources.