Deflection angle of photons through dark matter by black holes and wormholes using Gauss–Bonnet theorem

Ali Övgün

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

In this research, we used the Gibbons–Werner method (Gauss–Bonnet theorem) on the optical geometry of a black hole and wormhole, extending the calculation of weak gravitational lensing within the Maxwell’s fish eye-like profile and dark-matter medium. The angle is seen as a partially topological effect, and the Gibbons–Werner method can be used on any asymptotically flat Riemannian optical geometry of compact objects in a dark-matter medium.

Original languageEnglish
Article number115
JournalUniverse
Volume5
Issue number5
DOIs
StatePublished - May 2019
Externally publishedYes

Keywords

  • Black hole
  • Dark matter
  • Gauss–Bonnet theorem
  • Gravitational lensing
  • Weak deflection
  • Wormhole

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