Pulsars, transients and relativistic astrophysics

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The 7C Redshift Survey - understanding radio-loud quasars and radio galaxies

ASTR SOC P 162 (1999) 135-144

Authors:

CJ Willott, S Rawlings, KM Blundell

Abstract:

Orientation-based unified schemes for radio-loud quasars and radio galaxies are discussed in the light of a new complete sample of identified radio sources - the 7C Redshift Survey. Selected at the low radio frequency of 151 MHz this sample is free of orientation biases and together with the 3CRR sample allows a direct comparison of the properties of radio galaxies and quasars. The fraction of quasars in complete samples is used to estimate the opening angle of the putative obscuring torus. Correlations between the extended radio luminosity and the optical continuum and narrow emission line luminosities are presented and discussed in terms of the physical processes occurring in radio-loud AGN.
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MERLIN observations of relativistic ejections from GRS 1915+105

(1998)

Authors:

RP Fender, ST Garrington, DJ McKay, TWB Muxlow, GG Pooley, RE Spencer, AM Stirling, EB Waltman
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Multiwavelength Observations of GX 339-4 in 1996. I. Daily Light Curves and X-ray and Gamma-Ray Spectroscopy

(1998)

Authors:

IA Smith, EP Liang, D Lin, M Moss, A Crider, RP Fender, Ph Durouchoux, S Corbel, R Sood
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Observations of GX 339-4 in 1996

(1998)

Authors:

IA Smith, EP Liang, D Lin, M Bottcher, M Moss, A Crider, AV Filippenko, DC Leonard, RP Fender, Ph Durouchoux, S Corbel, R Sood
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MERLIN observations of superluminal motions in GRS 1915+105

Astrophysical Letters and Communications 38:1-6 (1998) 229-232

Authors:

RP Fender, ST Garrington, DJ McKay, TWB Muxlow, GG Pooley, RE Spencer, AM Stirling, EB Waltman

Abstract:

We present a brief discussion of high resolution observations of relativistic ejections from GRS 1915+103 with MERLIN. We have imaged superluminal motions in the inner 300 milliarcsec of several ejections from the system, with significantly higher proper motions than previously observed on arcsecond scales with the VLA. Under standard assumptions of an intrinsically symmetric jet, we derive a velocity for the ejecta which is higher then the previously accepted value of 0.92c, although the angle to the line of sight is comparable. © 1999 OPA (Overseas Publishers Association) N.V Published by license under the Gordon and Breach Science Publishers imprint.