Abstract
The search for multiply imaged quasars among highly luminous quasars (HLQs) is a very good strategy to determine the fundamental parameters of the Universe. We report on the present observational status of a combined sample of HLQs, including new observations obtained with the Nordic Optical Telescope (NOT) and at ESO. This combined sample of HLQs now contains 1178 distinct HLQs. A complete list of the total sample will be soon made available, through a World-Wide-Web page. Preliminary maximum likelihood results are also presented, using a simple statistical model to constrain the values of galactic parameters, of the number counts of QSOs, and of the cosmological constant.
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© 1996 International Astronomical Union
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Claeskens, JF., Jaunsen, A.O., Surdej, J. (1996). Gravitational Lenses among Highly Luminous Quasars: Large Optical Surveys. In: Kochanek, C.S., Hewitt, J.N. (eds) Astrophysical Applications of Gravitational Lensing. International Astronomical Union / Union Astronomique Internationale, vol 173. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0221-3_3
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DOI: https://doi.org/10.1007/978-94-009-0221-3_3
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