Orbital modulation and longer term variability in the radio emission from Cygnus X-1
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 302:1 (1999) l1-l5
Completeness and confusion in the identification of Lyman-break galaxies
HY-REDSHIFT UNIVERSE: GALAXY FORMATION AND EVOLUTION AT HIGH REDSHIFT 193 (1999) 513-516
Infrared spectroscopic variability of Cygnus X-3
Symposium - International Astronomical Union Cambridge University Press (CUP) 193 (1999) 358-359
No evidence for a 'redshift cut-off' for the most powerful classical double radio sources
ASTR SOC P 193 (1999) 90-93
Abstract:
We use three samples (3CRR, 6CE and 6C*) to investigate the radio luminosity function (RLF) for the 'most powerful' low-frequency selected radio sources. We find that the data are well fitted by a model with a constant ca-moving space density at high redshift as well as by one with a declining co-moving space density above some particular redshift. This behaviour is very similar to that inferred for steep-spectrum radio quasars by Willott et al (1998) in Line with the expectations of Unified Schemes. We conclude that there is as yet no evidence for a 'redshift cutoff' in the co-moving space densities of powerful classical double radio sources, and rule out a art-off at z less than or similar to 2.5.MERLIN observations of relativistic ejections from GRS 1915+105
(1998)