2 papers
astro-ph1999
Lambda_0 and Omega_0 from Lensing Statistics and Other Methods: Is There a Conflict?
Phillip Helbig, Juan Francisco Macias-Perez, Ralf Quast +2
We discuss the consistency of constraints in the lambda_0-Omega_0 plane from gravitational lensing statistics, the m-z relation for type Ia supernovae and CMB anisotropies, based o…
astro-ph1999
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…