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The geometry of photon surfaces

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Claudel, Clarissa-Marie, Virbhadra, K. S., Ellis, G. F. R.·2001·Journal of Mathematical Physics

Abstract

The photon sphere concept in Schwarzschild space–time is generalized to a definition of a photon surface in an arbitrary space–time. A photon sphere is then defined as an SO(3)×R-invariant photon surface in a static spherically symmetric space–time. It is proved, subject to an energy condition, that a black hole in any such space–time must be surrounded by a photon sphere. Conversely, subject to an energy condition, any photon sphere must surround a black hole, a naked singularity or more than a certain amount of matter. A second order evolution equation is obtained for the area of an SO(3)-invariant photon surface in a general nonstatic spherically symmetric space–time. Many examples are provided.

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Metadata

Authors
Claudel, C.-M., Virbhadra, K. S., & Ellis, G. F. R.
Venue
Journal of Mathematical Physics
Published
2001-02-01
Volume
42
Issue
2
Pages
818-838
ISSN
  • 0022-2488 (ISSN-L)
  • 1089-7658
OpenAlex
W2133824920
Cited by
598
References
0
FWCI
2.07
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The geometry of photon surfaces. https://app.cochat.ai/papers/10.1063/1.1308507
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Claudel, C.-M., Virbhadra, K. S., & Ellis, G. F. R. (2001). The geometry of photon surfaces. Journal of Mathematical Physics. https://doi.org/10.1063/1.1308507

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