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CFHT AO Imaging of the CLASS Gravitational Lens System B1359+154
D. Rusin, P. B. Hall, R. C. Nichol +3
We present adaptive optics imaging of the CLASS gravitational lens system B1359+154 obtained with the Canada-France-Hawaii Telescope (CFHT) in the infrared K band. The observations…
CLASS B1152+199 and B1359+154: Two New Gravitational Lens Systems Discovered in the Cosmic Lens All-Sky Survey
S. T. Myers, D. Rusin, C. D. Fassnacht +9
The third phase of the Cosmic Lens All-Sky Survey (CLASS) has recently been completed, bringing the total number of sources imaged to over 15000 in the CLASS and JVAS combined surv…
Gravitational lensing statistics with extragalactic surveys. II. Analysis of the Jodrell Bank-VLA Astrometric Survey
P. Helbig, D. R. Marlow, R. Quast +3
We present constraints on the cosmological constant from gravitational lensing statistics of the Jodrell Bank-VLA Astrometric Survey (JVAS). Although this is the largest gr…
Measuring Cosmological Parameters with the JVAS and CLASS Gravitational Lens Surveys
P. Helbig, R. D. Blandford, I. W. A. Browne +11
The JVAS (Jodrell Bank-VLA Astrometric Survey) and CLASS (Cosmic Lens All-Sky Survey) are well-defined surveys containing about ten thousand flat-spectrum radio sources. For many r…