Radiation Pattern of Radio and Optical Components of Extended Radio Sources

TL;DR

This paper analyzes the radiation patterns of optical and radio components of extended radio sources, estimating their shapes and luminosities, and presents a new list of 116 giant radio sources.

Contribution

It provides new estimates of the radiation patterns and luminosities of optical and radio components, revealing non-spherical optical patterns and introducing a catalog of giant radio sources.

Findings

Radio emission regions are nearly spherical.

Central radio component has a narrow 24° beam.

Optical component's main lobe is about 26° wide.

Abstract

The relation between parameters the D/sqrt(I) and Ic/Isum and radiation patterns of the optical and radio components of an extended radio source is analyzed, where D and I are the apparent size and observed radiation intensity of the source or its components respectively. The parameters of the pattern in the optical and radio (1.4 GHz) ranges are estimated. The radiation pattern of extended radio-emitting regions is close to spherical and the radiation of the central component is concentrated in a 24 degrees wide beam. Its luminosity is a factor of 4.58 higher than that of the extended component of the radio source. The radiation pattern of the optical component of the radio source turned out to be unexpectedly non-spherical: the main lobe of the pattern is about 26 degrees wide. The g-band luminosity is 6.4-12.3 times higher than the luminosity of the spherical fraction of the "optical" radiation pattern. A list of 116 new giant radio sources is presented.