Gravitational lensing of the distant SPT0418-47 galaxy (schematic)

This schematic animation shows how light from a distant galaxy is distorted by the gravitational effects of a foreground galaxy, which acts like a lens and makes the distant source appear distorted, but magnified, forming characteristic rings of light, known as Einstein rings. This effect has allowed astronomers to see the distant galaxy SPT0418-47 (which appears as a golden ring in the ALMA images) in finer detail than would have been possible otherwise. 

The foreground galaxy is not visible in the ALMA images of SPT0418-47 because it is too faint at the wavelengths used. The blue colour used in this schematic to represent this foreground galaxy is artificial.

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Data e Publikimit:Gus 12, 2020, 17:00 CEST
Publikime të ngjashme:eso2013
Kohëzgjatja:25 s
Frame rate:25 fps

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Tipi:Early Universe : Cosmology : Phenomenon : Lensing

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