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Bounds on Photon Spheres and Shadows of Charged Black Holes in Einstein-Gauss-Bonnet-Maxwell Gravity

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arxiv 1912.05569 v1 pith:7JF2XASH submitted 2019-12-11 gr-qc hep-th

Liang Ma , H. Lu This is my paper · ORCID
classification gr-qchep-th
keywords blackphotonchargedeinstein-gauss-bonnet-maxwellholeholesshadowsspheres
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abstract

We consider spherically symmetric and static charged black holes in Einstein-Gauss-Bonnet-Maxwell gravities in general $D\ge 5$ dimensions and study their photon spheres and black hole shadows. We show that they all satisfy the sequence of inequalities recently proposed relating a black hole's horizon, photon sphere, shadow and its mass.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Schwarzschild Black Holes Immersed in Born-Infeld Magnetic Fields and Their Observational Signatures

    gr-qc 2025-06 conditional novelty 6.0 of 10

    Numerically solving full Born-Infeld magnetic fields around a Schwarzschild black hole makes meridional photon orbits prolate and elongates the black hole shadow along the polar axis at high inclination.

  2. Bounds for Lyapunov exponent of circular light orbits in black holes

    gr-qc 2024-12 conditional novelty 6.0 of 10

    For any static, spherically symmetric black hole obeying Einstein's equations and the dominant energy condition, the circular photon orbit's Lyapunov exponent is bounded by the photon-sphere surface gravity, the Unruh...

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