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10 papers · 2 filters
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…
The Cosmic Lens All-Sky Survey: I. Source selection and observations
S. T. Myers, N. J. Jackson, I. W. A. Browne +15
The Cosmic Lens All-Sky Survey (CLASS) is an international collaborative program which has obtained high-resolution radio images of over 10000 flat-spectrum radio sources in order…
B0850+054: a new gravitational lens system from CLASS
A. D. Biggs, D. Rusin, I. W. A. Browne +12
We report the discovery of a new gravitational lens system from the CLASS survey. Radio observations with the VLA, the WSRT and MERLIN show that the radio source B0850+054 is compr…
CLASS B0445+123: a new two-image gravitational lens system
M. K. Argo, N. J. Jackson, I. W. A. Browne +16
A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey (CLASS). Radio observations with the VLA, MERLIN and the VLBA at increas…
The internal structure of the lens PG1115+080: breaking degeneracies in the value of the Hubble Constant
Tommaso Treu, Leon V. E. Koopmans
We combine lensing, stellar kinematic and mass-to-light ratio constraints to build a two-component (luminous plus dark) mass model of the early-type lens galaxy in PG1115+080. We f…
Probing dark matter distribution with gravitational lensing and stellar dynamics
T. Treu, L. V. E. Koopmans
The Lenses Structure and Dynamics (LSD) Survey aims at measuring the luminous and dark matter distribution of high redshift early-type galaxies by combining gravitational lens anal…