Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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name
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.
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A gravitational lens configuration resulting in four duplicated images of the back ground image around the central gravitationally lensing object, in a cross configuration.
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
A capitalization of Einstein cross.
From Einstein (“Albert Einstein”) + cross. From the shape of a cross, of four points at roughly square angles around a central object, caused by distortions in the path of light's travel due to Einsteinian relativity (Albert Einstein's general relativity) creating four points out of a single light source behind the off-center central object. (An on-center central object results in an Einstein ring.).
