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Angular Size-Redshift Test for Compact Radio Sources in the Caltech-Jodrell Bank Surveys

Wilkinson, P. N. and Browne, I. W. A. and Alcock, D. and Myles, S. and Henstock, D. and Readhead, A. C. S. and Pearson, T. J. and Xu, W. and Taylor, G. B. and Polatidis, A. G. and Vermeulen, R. C. (1998) Angular Size-Redshift Test for Compact Radio Sources in the Caltech-Jodrell Bank Surveys. In: Observational Cosmology With the New Radio Surveys. Astrophysics and Space Science Library. No.226. Springer , Dordrecht, pp. 221-226. ISBN 978-94-010-6205-3.

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In 1958 Hoyle first suggested that the angular separation of the components of large double radio sources might be used as a standard rod in the classical angular diameter vs. redshift (θ-z) test (Hoyle 1959). Thirty years and thousands of radio observations later this hope was finally dashed. Gradually it had become clear that the evolution of the intrinsic sizes of double radio sources with cosmic epoch completely masked the more subtle effects of universal geometry (e.g. Nilsson et al. 1993). It was therefore with some surprise that the community greeted the analyses of the angular sizes of the milliarcsecond jets in bright radio nuclei by Kellermann (1993) and Gurvits (1994). Rather than the monotonic fall-off of median angular size with redshift exhibited by double radio sources, the compact radio sources seemed to show the expected signature of standard relativistic cosmology i.e. an initial fall-off of θ with z followed by an approximately constant θ beyond z ∼ 0.5. Perhaps, as suggested by Kellermann (1993), the power and short lifetimes of these structures make them less susceptible to the environmental effects which bedevilled the test with double sources.

Item Type:Book Section
Related URLs:
URLURL TypeDescription ReadCube access
Readhead, A. C. S.0000-0001-9152-961X
Pearson, T. J.0000-0001-5213-6231
Taylor, G. B.0000-0001-6495-7731
Additional Information:© 1998 Springer Science+Business Media Dordrecht. This research was supported in part by European Commission, TMR Programme, Research Network Contract ERBFMRXCT96-0034 "CERES".
Funding AgencyGrant Number
Marie Curie FellowshipERBFMRXCT96-0034
Subject Keywords:Radio Source; Angular Size; Compact Radio Source; Intrinsic Size; Luminosity Evolution
Series Name:Astrophysics and Space Science Library
Issue or Number:226
Record Number:CaltechAUTHORS:20190605-151021035
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96165
Deposited By: Tony Diaz
Deposited On:06 Jun 2019 03:17
Last Modified:16 Nov 2021 17:18

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