QED Effects on Kerr-Newman Black Hole Shadows
General Relativity and Quantum Cosmology
2025-03-19 v3 High Energy Astrophysical Phenomena
High Energy Physics - Theory
Abstract
Incorporating first-order QED effects, we explore the shadows of Kerr-Newman black holes with a magnetic charge through the numerical backward ray-tracing method. Our investigation accounts for both the direct influence of the electromagnetic field on light rays and the distortion of the background spacetime metric due to QED corrections. We notice that the area of the shadow increases with the QED effect, mainly due to the fact that the photons move more slowly in the effective medium and become easier to be trapped by the black hole.
Keywords
Cite
@article{arxiv.2403.06886,
title = {QED Effects on Kerr-Newman Black Hole Shadows},
author = {Shaobing Yuan and Changkai Luo and Zezhou Hu and Zhenyu Zhang and Bin Chen},
journal= {arXiv preprint arXiv:2403.06886},
year = {2025}
}
Comments
14 pages, 8 figures; v2: references added and minor revisions; v3: accepted by CPC