The statistical properties of compact features in radio sources as a function of flux density.
Abstract
A statistical study has been made of the properties of compact components in radio sources based on observations with a long-baseline interferometer over a wide flux density range. The fraction of the flux density contained in components less than or approximately equal to 1 arcsec has been determined for each source and the statistics of this parameter have been investigated as a function of flux density. The observations are compared with the expected properties of radio sources calculated on the basis of a complete sample of 3CR sources. The best agreement with the observations is achieved when strong density evolution and linear-size evolution are included in the calculations. Some aspects of the results are explained by a correlation of component compactness (in linear size) with radio luminosity for the high-luminosity sources in the 3CR sample.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 1978
- DOI:
- 10.1093/mnras/182.4.761
- Bibcode:
- 1978MNRAS.182..761S
- Keywords:
-
- Radiant Flux Density;
- Radio Sources (Astronomy);
- Statistical Distributions;
- Cosmology;
- Extragalactic Radio Sources;
- Fine Structure;
- Luminous Intensity;
- Statistical Analysis;
- Time Dependence;
- Visibility;
- Astrophysics;
- Radio Sources:Compact;
- Radio Sources: Statistics