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- W2238852895 abstract "Gravitational lensing has played an important role in cosmology since the discovery of the first gravitational lensing system in 1979 (Walsh et al.), where the quasar QSO 0957+561 can be seen in two images. Such multiple images of a distant source will typically have an image separation of a few arcseconds.This thesis is built on a sample of 201 quasars observed at the NOT in the period 1994-1995. The goal has been to discover new gravitational lensing candidates among these quasars. A PSF subtraction could be performed on 173 of the quasars to uncover close and faint images." @default.
- W2238852895 created "2016-06-24" @default.
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- W2238852895 date "2007-01-01" @default.
- W2238852895 modified "2023-09-23" @default.
- W2238852895 title "A systematic search for gravitationally lensed quasars" @default.
- W2238852895 hasPublicationYear "2007" @default.
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