The counts and the distribution of spectral indices of extragalactic radio sources

Details The counts and the distribution of spectral indices of extragalactic radio sources The counts and the distribution of spectral indices of extragalactic radio sources

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68.1121g&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, Nov.-Dec. 1991, p. 1121-1133. In Russian.

Astronomy and Astrophysics

Astronomy

5

Extragalactic Radio Sources, Radio Astronomy, Radio Spectra, Analytic Functions, Frequency Ranges, Radiant Flux Density

Scientific paper

A simple model is presented which fully explains the frequency characteristics of the dependence of radio source counts and the dependence of spectral index distribution on flux frequency and interval. The hypothesis of Pauliny-Toth and Kellerman (1972) arguing the absence of a new radio source population that is making a significant contribution to the total number of objects observed at high frequencies is confirmed. Sources with plane or power spectra are found to have similar histories, in agreement with the evolutionary model of Condon (1989).

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