Gravitational Lens PKS 1830-211 (IMAGE)
Caption
Looking at a distant galaxy: the radio chart (left) shows the image of the blazar PKS 1830-211 distorted by the gravitational lens effect. The detail on the right is a simulation of the micro-gravitational lens effect in the gamma ray region; direct observation of the orange ring -- it also represents images of the blazar -- is not possible due to its small size.
Credit
Patnaik et al. 1994, Liege Conference on Gravitational Lenses and the Universe / Vovk
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