Einstein cross English

Meaning Einstein cross meaning

What does Einstein cross mean?

Einstein cross noun

— (astronomy, physics) A gravitational lens configuration resulting in four duplicated images of the back ground image around the central gravitationally lensing object, in a cross configuration.

Einstein Cross properNoun

— (astronomy, galaxy) A quadruply replicated image of a quasar, in the configuration of a cross, surrounding a central foreground galaxy which caused the replication through gravitational lensing.