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The Fanaroff-Riley Classification of Southern Extragalactic Radio Sources

Published online by Cambridge University Press:  25 April 2016

P. A. Jones
P. A. Jones*
Affiliation:
School of Physics, University of Sydney, NSW 2006
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Abstract

A sample of 339 extragalactic radio sources, noted as extended or multiple in the Molonglo Reference Catalogue, has been observed with the Molonglo Observatory Synthesis Telescope at 843 MHz. It is found that the strong sources all have edge-brightened morphology, while weak sources may be edge-brightened or edge-darkened. The morphological classification of Fanaroff and Riley is not a sharp division by luminosity. The degree of edge-darkening or edge-brightening is better parametrised by one-dimensional moments along the major axis than by the ratio of the separation between brightness maxima to the total extent as used by FR.

Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 8 , Issue 3 , 1990 , pp. 254 - 256
Copyright
Copyright © Astronomical Society of Australia 1990

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