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Powerful Radio Sources in Clusters of Galaxies

Published online by Cambridge University Press:  25 April 2016

A. M. Unewisse  and
R. W. Hunstead
A. M. Unewisse
Affiliation:
School of Physics, University of Sydney, NSW 2006
R. W. Hunstead
Affiliation:
School of Physics, University of Sydney, NSW 2006
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Abstract

Using a complete sample, we have looked for correlations in position between radio sources with S408 ≥ 1 Jy in the Molonglo Reference Catalogue (MRC) and rich clusters of galaxies in the Abell, Corwin and Olowin catalogue (ACO). Within a projected radius of 100 kpc of the cluster centre, we find an overdensity of radio sources similar to that seen by Robertson and Roach (1990). They attributed this feature to centrally located dominant cluster galaxies. We confirm this hypothesis by looking at the morphology of the clusters within this peak and by optically identifying galaxies associated with the radio emission. Due to the relatively high flux density limit imposed, the cluster radio sources in this sample are among the most powerful in the southern sky. The probability of a cluster containing a radio source of this power is found not to depend on cluster richness.

Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 1 , 1991 , pp. 100 - 102
Copyright
Copyright © Astronomical Society of Australia 1991

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