Einstein cross

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Einstein cross

(ÿn -stÿn) A gravitationally-lensed image of a distant quasar (redshift 1.7) by a foreground (redshift 0.039) spiral galaxy. The image of the quasar is split into four point sources forming a cross at the center of the galaxy. Gravitational microlensing has been observed as variations in the light between the four components. See gravitational lens.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
With famous members like Stephan's Quintet and Einstein's Cross, you could be forgiven for thinking that only observers with large scopes need apply.
One such is GSO2237+0305, a full 8 billion light years away from us in the far southern corner of the constellation, but it is probably better known as Einstein's Cross or as Huchra's Lens.
Einstein's Cross. This gravitationally lensed quasar is by far the toughest object on my list: with dogged persistence, magnifications of several hundred, and good conditions my C14 infrequently reveals a hint of asymmetric structure, mere arcseconds across, around the core of 14th-magnitude lensing galaxy CGCG 378-15.

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