Observational aspects of gravitational lensing

  title={Observational aspects of gravitational lensing},
  author={J. Surdej},
  journal={Lecture Notes in Physics},
  • J. Surdej
  • Published 1990
  • Physics
  • Lecture Notes in Physics
In this review on the recent observational aspects of gravitational lensing, I first present the various systematic optical surveys for multiply lensed extragalactic objects that are being carried out at several observatories enjoying good seeing conditions. I then summarize the updated observational status of all proposed gravitational lens candidates, concentrating mainly on multiply lensed QSOs (the cases of giant luminous arcs, radio rings and distant 3C radio galaxies are described… Expand
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