The Cloverleaf quasar (H1413+117, QSO J1415+1129) is a bright, gravitationally lensed quasar discovered by Hazard, Morton, Terlevich and McMahon in 1984. It receives its name because of gravitational lensing splitting the single quasar into four images.
The Cloverleaf quasar (H1413+117, QSO J1415+1129) is a bright, gravitationally lensed quasar discovered by Hazard, Morton, Terlevich and McMahon in 1984. It receives its name because of gravitational lensing splitting the single quasar into four images.
Source: Wikipedia "Cloverleaf quasar" · CC BY-SA 4.0
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