Large-scale anisotropy in the sky distribution of extragalactic radio sources

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Cosmology, Extragalactic Radio Sources, Anisotropy, Galactic Clusters, Spatial Distribution

Scientific paper

An analysis of the Molonglo catalog (Large et al., 1981) was performed, showing that strong radio sources are significantly concentrated in the supergalactic plane. This finding is consistent with recent reports of large-scale structure which are based on optical observations of distant galaxies and clusters. It is found that the supergalactic concentration probably extends out to at least z of about 0.02, and that the presently observed anisotropy is also reflected in the log (N) - log (S) relation. The results suggest that the slope of the source counts at high flux densities is affected by local large-scale structure.

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