A Survey for Large Separation Lensed FIRST Quasars

  title={A Survey for Large Separation Lensed FIRST Quasars},
  author={Eran Ofek and Dan Maoz and Francisco Prada and Tsafrir Kolatt and Hans-Walter Rix},
Little is known about the statistics of gravitationally lensed quasars at large (7− 30) image separations, which probe masses on the scale of galaxy clusters. We have carried out a survey for gravitationally-lensed objects, among sources in the FIRST 20cm radio survey that have unresolved optical counterparts in the digitizations of the Palomar Observatory… CONTINUE READING