Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....67..175f&link_type=abstract
Astronomy and Astrophysics, vol. 67, no. 2, July 1978, p. 175-184.
Astronomy and Astrophysics
Astronomy
5
Astronomical Catalogs, Galactic Clusters, Isotropy, Radio Sources (Astronomy), Spatial Distribution, Black Body Radiation, Cosmology, Histograms, Spectrum Analysis, Statistical Distributions
Scientific paper
The spatial distribution of sources listed in the B2 catalog is analyzed, taking into account all known instrument effects, by means of power spectrum analysis and binning analysis. A test is performed to determine whether the log N-log S relation is a universal statistical relation or might change from region to region of the sky depending on the regional source density in some flux interval. A very simplified world model is used to evaluate an upper limit to the volume density of any radio-source clustering which yields a surface source density consistent with the values obtained. It is found that in regions where radio sources might be clustered, the density contrast with respect to regions outside possible source groupings is at least four orders of magnitude fainter than the analogous contrast for clusters of galaxies in a region comparable to the scale of superclusters. The results apparently indicate that the radio sources in the B2 catalog are not clustered at all.
Fanti Carla
Lari Carlo
Olori M. C.
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