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

Ali Övgün; Izzet Sakalli; Joel Saavedra

doi:10.1088/1475-7516/2018/10/041

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

Ali Övgün, Izzet Sakalli, Joel Saavedra

INSTITUTE OF PHYSICS

Research output: Contribution to journal › Article › peer-review

128 Scopus citations

Abstract

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 language	English
Article number	041
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2018
Issue number	10
DOIs	https://doi.org/10.1088/1475-7516/2018/10/041
State	Published - 22 Oct 2018

Keywords

GR black holes
gravitational lensing
gravitational waves/theory
gravity

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10.1088/1475-7516/2018/10/041

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abstract = "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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AU - Sakalli, Izzet

AU - Saavedra, Joel

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N2 - 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.

AB - 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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KW - gravitational lensing

KW - gravitational waves/theory

KW - gravity

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M1 - 041

ER -

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

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