Study of the Anglular Structure of Emission from the Radio Galaxy 3C295 in the Decameter Wavelength Range

We present the results of observations of the angular structure of the radio source 3C295 at decameter waves using the URAN-1 and URAN-2 interferometers. It is shown that the radio image of 3C295 at these frequencies differs drastically from the structure of this object observed at higher frequencies. The simplest model of the structure of this radio galaxy, comprising one component with a Gaussian brightness distribution of angular size (7.4 ± 0.4)× (8.7± 0.4) at 25 MHz and (9.1± 0.5)× (10.6 ± 0.5) at 20 MHz, is determined. A decrease in the spectral density of the emission with decreasing frequency, observed below 50 MHz, is explained.     

Experimental investigation of angular structure in the radio emission from the quasar 3C196 at decameter wavelengths

Radioastronomical Institute, Academy of Sciences of the Ukrainian SSR. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 33, No. 5, pp. 534–545, May, 1990.     

Observation of the quasar 3C47 with the interferometer URAN at decametric wavelengths

Preliminary results of the observation of the angular structure of the quasar 3C47 at 20 and 25 MHz using the URAN-1 interferometer are presented. The most probable model of the brightness distribution of this source at decameter wavelengths has been determined. This model consists of two extended components having angular dimensions about 22 arcsec and separated by about 50 arcsec.Radioastronomical Institute, Ukrainian Academy of Sciences, Khar'kov. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 38, No. 6, pp. 511–521, June, 1995.