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They mean the light emitted by the section of the accretion disk that is behind the black hole takes a path such that it meets the observers eye. I. e. space is
by mr_mitm 7y ago
They mean the light emitted by the section of the accretion disk that is behind the black hole takes a path such that it meets the observers eye. I. e. space is curved so that we can see behind the black hole.
- Already__Taken 7y agoShouldn't there be a photon ring no matter what? Accretion disk or not? Wouldn't all light in the universe get collected into a photo ring?
- SiempreViernes 7y agoThe photon ring is just one possible stable orbit. Just like there is nothing that forces all the stars to orbit our sun, there is nothing forcing the universe to place all the photons in the universe into one stable orbit around a black hole.