Back حلقة أينشتاين Arabic আইনস্টাইন বলয় Bengali/Bangla Anell d'Einstein Catalan Einsteinův prstenec Czech Einsteinring German Δακτύλιος του Αϊνστάιν Greek Anillo de Einstein Spanish Einsteini rõngas Estonian حلقه اینشتین Persian Anneau d'Einstein French
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| Gravitational lensing |
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Einstein ring Formalism Strong lensing Microlensing Weak lensing |
An Einstein ring, also known as an Einstein–Chwolson ring or Chwolson ring (named for Orest Chwolson), is created when light from a galaxy or star passes by a massive object en route to the Earth. Due to gravitational lensing, the light is diverted, making it seem to come from different places. If source, lens, and observer are all in perfect alignment (syzygy), the light appears as a ring.
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