QED effects on Kerr-Newman black hole shadows*
Shaobing YuanSchool of Physics, Peking University, Beijing 100871, ChinaChangkai LuoSchool of Physics, Peking University, Beijing 100871, ChinaZe-zhou 泽州 Hu 胡School of Physics, Peking University, Beijing 100871, ChinaZhen-yu 震宇 Zhang 张School of Physics, Peking University, Beijing 100871, ChinaBin 陈斌 ChenCenter for High Energy Physics, Peking University, Beijing 100871, China
2024en
ABI
Аннотация
Abstract By incorporating first-order QED effects, we explored the shadows of Kerr-Newman black holes with a magnetic charge through the numerical backward ray-tracing method. Our investigation encompassed both the direct influence of the electromagnetic field on light rays and the distortion of the background spacetime metric due to QED corrections. We found that the area of the shadow increases with the QED effect, mainly owing to the fact that the photons travel more slowly in the effective medium, making them more susceptible to being trapped by the black hole.
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