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Kiloparsec Jet Speeds in Classical Double Radio Sources

Published online by Cambridge University Press:  13 May 2016

Tigran G. Arshakian
Tigran G. Arshakian*
Affiliation:
Cavendish Astrophysics Group, Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE, UK, tigar@mrao.cam.ac.uk Byurakan Astrophysical Observatory, Byurakan 378433, Armenia tigar@mrao.cam.ac.uk

Abstract

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On the basis of an intrinsically symmetric relativistic jet model, analytical equations between the mean jet speed and the mean jet flux asymmetry, and between their variances are derived in the context of an orientation-based unification scheme. The mean jet speeds of classical double radio sources are estimated on kiloparsec scales by using the asymmetry of jet-counterjet flux densities taken from the 3CRR and B2 samples. For FRI radio sources the mean jet speed is ∼ (0.54 ± 0.03)c, while for FRII low-redshift radio galaxies and intermediate-redshift quasars the values found are ∼ (0.4 ± 0.06)c and ≳ 0.6c respectively.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 152 - 153
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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