Searching for Stongly-Lensed Quasars in the Sloan Digital Sky Survey

Details Searching for Stongly-Lensed Quasars in the Sloan Digital Sky Survey Searching for Stongly-Lensed Quasars in the Sloan Digital Sky Survey

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20110104p&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #101.04; Bulletin of the American Astronomical Society, Vol. 34, p.1269

Astronomy and Astrophysics

Astronomy

Scientific paper

The Sloan Digital Sky Survey offers an opportunity to substantially increase the known sample of gravitationally-lensed quasars. I will talk about an algorithm for selecting gravitational lens candidates from amongst SDSS quasars which allows for the recovery of equal flux point source pairs down to separations of ~ 0.7″ in typical SDSS Early Data Release observing conditions. I will also talk about a method for determining the selection function of this algorithm through the use of simulated SDSS images. Finally, I will describe how applying this algorithm to a sample of 5120 z > 0.6 SDSS quasars implies an observed lensing fraction of not more than 4 x 10-3 and not less than 3 x 10-5 (95% confindence levels).

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