Shadow cast and deflection angle of Kerr-Newman-Kasuya spacetime

Ali Övgün, Izzet Sakalli, Joel Saavedra

Research output: Contribution to journalArticlepeer-review

128 Scopus citations


We study the shadow cast or silhouette generated by a Kerr-Newman-Kasuya (KNK) spacetime (rotating dyon black hole). It is shown that in addition to the angular momentum of the black hole, the dyon charge also affects the shadow image of the KNK black hole. Moreover, we analyze the weak gravitational lensing by the KNK black hole by using the Gauss-Bonnet theorem. Finally, we find that extra dyon charge decreases both the deflection angle and shadow of the KNK black hole.

Original languageEnglish
Article number041
JournalJournal of Cosmology and Astroparticle Physics
Issue number10
StatePublished - 22 Oct 2018


  • GR black holes
  • gravitational lensing
  • gravitational waves/theory
  • gravity


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