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theoretical physics aspects > field theory > classical field theory > gravitation > gravitational lens

Terme préférentiel

gravitational lens  

Définition

  • A concentration of matter, such as a galaxy or a cluster of galaxies, that bends light rays from a background object, resulting in production of multiple images. If the two objects and the Earth are perfectly aligned, the light from the distant object appears as a ring from Earth. This is called an Einstein Ring, since its existence was predicted by Einstein in his theory of general relativity. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=gravitational+lens&formSubmit=Search&showAll=1)

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http://data.loterre.fr/ark:/67375/MDL-ZT1PJXWS-H

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