341 citations · 886 across the 20 of their papers we have counts for
20 papers · 1 filter
Linear radio structures in selected Seyfert and LINER galaxies
E. Xanthopoulos, A. H. Thean, A. Pedlar +1
High resolution MERLIN 5 GHz observations (0.04") of 7 Seyfert galaxies, selected as the ones previously showing evidence of collimated ejection, have been compared with high resol…
Improved constraints on the cosmological parameters using the VLA FIRST survey
E. Xanthopoulos, R. H. Becker, W. H. deVries +1
Using the final version of the VLA FIRST survey (Becker et al. 2003), the optical Sloan Digital Sky Survey Data Release 3 (DR3) quasar list and a series of carefully selected crite…
The Cosmic Lens All-Sky Survey:II. Gravitational lens candidate selection and follow-up
I. W. A. Browne, P. N. Wilkinson, N. J. F. Jackson +19
We report the final results of the search for gravitationally lensed flat-spectrum radio sources found in the combination of CLASS (Cosmic Lens All Sky Survey) and JVAS (Jodrell-Ba…
Constraints on Cosmological Parameters from the Analysis of the Cosmic Lens All Sky Survey Radio-Selected Gravitational Lens Statistics
K. -H. Chae, A. D. Biggs, R. D. Blandford +20
We derive constraints on cosmological parameters and the properties of the lensing galaxies from gravitational lens statistics based on the final Cosmic Lens All Sky Survey (CLASS)…
A Determination of H_0 with the CLASS Gravitational Lens B1608+656: III. A Significant Improvement in the Precision of the Time Delay Measurements
C. D. Fassnacht, E. Xanthopoulos, L. V. E. Koopmans +1
The gravitational lens CLASS B1608+656 is the only four-image lens system for which all three independent time delays have been measured. This makes the system an excellent candida…
A search for distant radio-loud quasars in the CLASS survey: three new radio-selected quasars at z>4
Ignas Snellen, Richard McMahon, Jane Dennett-Thorpe +3
We report on the search for distant radio-loud quasars in the Cosmic Lens All Sky Survey (CLASS) of flat spectrum radio sources with S_5GHz>30 mJy. Unresolved optical counterparts…