# Cosmological parameters and gravitational lensing statistics

## Phillip Helbig

### in Proceedings of the Seventeenth Texas Symposium on Relativistic Astrophysics and Cosmology (ADS: 1995NYASA.759.....B) H. Böhringer, G. E. Morfill & J. E. Trümper (eds.) Annals of the New York Academy of Sciences 759, 600–603 (1995) ISBN 0-89766941-X (cloth) ISBN 0-89766942-8 (paper)

Lensing statistics gives a method of testing the cosmological constant at intermediate redshifts---at low and high redshifts the possibilities for measuring $\lambda_{0}$ are limited and even at intermediate redshifts $\lambda_{0}$ often cancels out in observable relations---using well-understood lens theory and standard astrophysical assumptions

info and local links to full paper | DOI: 10.1111/j.1749-6632.1995.tb17617.x | ADS: 1995NYASA.759..600H | arXiv: astro-ph/9502041 | Google Scholar
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