A test of clustering among radio sources in 0.16 SR of the 6C survey

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Catalogs, Galactic Clusters, Radio Sources (Astronomy), Spatial Distribution, Graphs (Charts), Statistical Analysis

Scientific paper

Four tests for clustering of radio sources are briefly reviewed and a modified form of Covariance Function Analysis is adopted for a study of the 6C catalogue. The analysis of an area of 0.16 sr shows that the weakest sources are evenly distributed on scales of a few degrees, corresponding to linear scales of several hundred Mpc. Among the brightest sources (flux density greater than 2 Jy) there is a significant excess of close (less than 12 arcmin) pairs of sources. This may be due to the detection of separate sources within clusters or superclusters of galaxies, but further observations are required to test this.

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