Visual distortions near a neutron star and black hole

@article{Nemiroff1993VisualDN,
  title={Visual distortions near a neutron star and black hole},
  author={Robert J. Nemiroff},
  journal={American Journal of Physics},
  year={1993},
  volume={61},
  pages={619-632}
}
  • R. Nemiroff
  • Published 1 July 1993
  • Physics
  • American Journal of Physics
The visual distortion effects visible to an observer traveling around and descending to the surface of an extremely compact star are described. Specifically, trips to a ‘‘normal’’ neutron star, a black hole, and an ultracompact neutron star with extremely high surface gravity, are described. Concepts such as multiple imaging, red‐ and blue‐shifting, conservation of surface brightness, the photon sphere, and the existence of multiple Einstein rings are discussed in terms of what the viewer would… 
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