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Lensing Caused by a Black Hole

Animated simulation of gravitational lensing caused by a Schwarzchild black hole going past a background galaxy. A secondary image of the galaxy can be seen within the black hole Einstein ring on the opposite direction of that of the galaxy. The secondary image grows as the primary image approaches the black hole. The surface brightness of the two images remain constant, but their angular size vary, hence producing an amplification of the galaxy luminosity as seen from a distant observer. The maximum amplification occurs when the background galaxy is exactly behind the black hole. (via WikiCommons)

There is a moment where there is two of the same galaxies. oh.muh.flarg’n.garsh.

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