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Spectra of Radio Galaxies in Clusters

Published online by Cambridge University Press:  25 April 2016

O. B. Slee ,
I. R. G. Wilson  and
Betty C. Siegman
O. B. Slee
Affiliation:
Division of Radiophysics, CSIRO, Sydney
I. R. G. Wilson
Affiliation:
Mount Stromlo and Siding Spring Observatories, Australian National University
Betty C. Siegman
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

There has been considerable speculation in recent years about the evolution of radio galaxies in clusters. The discovery of powerful X-ray emission with an apparently thermal spectrum from a considerable number of clusters has been attributed to a hot (108K) intracluster gas with an electron density of ∼ 10-3 cm -3 at the cluster centre (see e.g. McHardy 1978). Such a gas surrounding a radio galaxy may conceivably retard the expansion or diffusion of the relativistic electrons and thus allow the source to retain its identity for longer intervals than is the case for field galaxies.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 4 , 1982 , pp. 431 - 434
Copyright
Copyright © Astronomical Society of Australia 1982

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