Observed properties of FRII quasars and radio galaxies at z < 1.0

Abstract

In a long-term observing project we have imaged a complete sample of FRII quasars and radio galaxies with z < 1.0 at high resolution and high sensitivity with the VLA and MERLIN. This sample of 98 sources includes 15 quasars, 11 broad line radio galaxies and 57 narrow line radio galaxies, allowing unification to be considered in terms of source morphological properties. Radio maps of all the targets have been presented in earlier papers. Here we carry out a systematic analysis of the properties of the jets, cores, lobes and hotspots of objects in the sample. The majority of the tests that we perform show that the data are consistent with a model in which quasars and broad-line radio galaxies are unified with narrow-line objects. Relativistic beaming is the main effect that determines the properties of kiloparsec-scale jets, and it may also have some effect on hotspots. However, some properties of the sample are difficult to account for in simple unified models.

33 pages, 40 figures, 14 tables

References in corpus (3)

• The X-ray nuclei of intermediate-redshift radio sources
• WFPC2 LRF Imaging of Emission Line Nebulae in 3CR Radio Galaxies
• A Radio Through X-ray Study of the Jet/Companion-Galaxy Interaction in 3C 321

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• Search and modelling of remnant radio galaxies in the LOFAR Lockman Hole field
• Remnant radio-loud AGN in the Herschel-ATLAS field
• RAiSE III: 3C radio AGN energetics and composition
• RAiSE II: resolved spectral evolution in radio AGN
• Asymmetries in Extragalactic Double Radio Sources: Clues from 3D Simulations of Jet - Disc Interaction
• The faint radio sky: VLBA observations of the COSMOS field
• On the population of remnant FRII radio galaxies and implications for radio source dynamics
• Nature and evolution of powerful radio galaxies and their link with the quasar luminosity function
• The extended X-ray emission around HDF130 at z=1.99: an inverse Compton ghost of a giant radio source in the Chandra Deep Field North
• On the efficiency of jet production in FR II radio galaxies and quasars
• Active galactic nuclei cores in infrared-faint radio sources: Very long baseline interferometry observations using the Very Long Baseline Array