Shadow cast and deflection angle of Kerr-Newman-Kasuya spacetime
Shadow cast and deflection angle of Kerr-Newman-Kasuya spacetime
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DOI：
10.1088/1475-7516/2018/10/041
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发表时间：
2018-07
影响因子：
6.4
通讯作者：
A. Övgün;I. Sakalli;J. Saavedra
中科院分区：
文献类型：
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作者：
A. Övgün;I. Sakalli;J. Saavedra
本文研究了Kerr-Newman-Kasuya（KNK）时空（旋转双子黑洞）产生的阴影。结果表明，除了黑洞的角动量外，双子荷也影响KNK黑洞的阴影像。利用高斯-博内定理分析了KNK黑洞的弱引力透镜效应。最后，我们发现额外的双子电荷减小了KNK黑洞的偏转角和阴影。
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.