Weyl corrections to Einstein-Maxwell black holes alter thermodynamic stability, topological classification, photon shadows, and accretion disk luminosity, enabling constraints on the correction parameter from astrophysical observations.
Shadow of rotating charged black hole with Weyl corrections
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abstract
We construct theoretical investigation of the black hole shadow for rotating charged black hole in an asymptotically flat, axisymmetric, and stationary spacetime with Weyl corrections. This spacetime is characterized by mass ($M$), charge parameter ($q$), rotation parameter ($a$), and Weyl coupling constant ($\alpha$). We derive photon geodesics around the black hole and compute expressions for impact parameters with the help of photon spherical orbits conditions. We show how the presence of coupling constant $\alpha$ affects the shapes of black hole shadow from the usual Kerr-Newman black hole. A comparison with the standard Kerr and Kerr-Newman black hole is also include to observe the potential deviation from them. We find that the radius of black hole shadow decreases and the distortion in the shape of shadow increases with an increase in charge $q$ for both positive and negative values of coupling constant $\alpha$. We further extend our study by considering the plasma environment around the black hole and find out the essential expressions for the black hole shadow.
fields
gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Astrophysical Signature and Optical Appearance of Weyl--Corrected Einstein--Maxwell Black Holes
Weyl corrections to Einstein-Maxwell black holes alter thermodynamic stability, topological classification, photon shadows, and accretion disk luminosity, enabling constraints on the correction parameter from astrophysical observations.