Shadow cast and deflection angle of Kerr-Newman-Kasuya spacetime
Ali ÖvgünInstituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaíso, Chileİzzet SakallıPhysics Department, Arts and Sciences Faculty, Eastern Mediterranean University, Famagusta, North Cyprus via Mersin 10, TurkeyJoel SaavedraInstituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaíso, Chile
2018en
ABI
Аннотация
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.
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