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.
@article{arxiv.1807.00388,
title = {Shadow cast and Deflection angle of Kerr-Newman-Kasuya spacetime},
author = {Ali Övgün and İzzet Sakallı and Joel Saavedra},
journal= {arXiv preprint arXiv:1807.00388},
year = {2018}
}
Comments
16 pages, 4 figures. Accepted for publication in Journal of Cosmology and Astroparticle Physics (JCAP). arXiv admin note: text overlap with arXiv:gr-qc/0301100 by other authors