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Can a light ray distinguish charge of a black hole in nonlinear electrodynamics?

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arxiv 2101.05496 v1 pith:BYFFMFLZ submitted 2021-01-14 gr-qc hep-th

Bobir Toshmatov , Bobomurat Ahmedov , Daniele Malafarina This is my paper · ORCID
classification gr-qchep-th
keywords lightblackchargeelectrodynamicsholenonlinearraysdistinguish
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It is a well-known fact that light rays do not follow the null geodesics of the space-time in nonlinear electrodynamics; instead, they follow the null geodesics of the so-called effective space-time. Taking this into account, in this paper, we aim to discuss the possibility of distinguishing the type of charge with which the black hole is endowed, via the motion of light rays. The results show that, for any black hole being a charged solution of the field equations of general relativity coupled to the nonlinear electrodynamics, one cannot distinguish the two types of charge (magnetic or electric) through the motion of light rays around it.

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Cited by 4 Pith papers

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

  1. Regular Black Holes in General Relativity from Nonlinear Electrodynamics with de Sitter Cores

    gr-qc 2026-04 unverdicted novelty 6.0 of 10

    Two new regular black-hole solutions with de Sitter cores, supported by magnetic nonlinear electrodynamics, are constrained by Sgr A* shadows and shown to be linearly stable under scalar perturbations.

  2. Novel charged black hole solutions in conformal Killing gravity

    gr-qc 2025-02 conditional novelty 5.0 of 10

    Three new charged black hole spacetimes in conformal Killing gravity reproduce the Sgr A* shadow size after parameter tuning.

  3. Spherically symmetric and static black bounces with multiple horizons, throats, and anti-throats in four dimensions

    gr-qc 2025-02 conditional novelty 5.0 of 10

    A new family of static, spherically symmetric black bounce spacetimes with multiple horizons, throats, and anti-throats is constructed and sourced by a partially phantom scalar field with nonlinear electrodynamics.

  4. Optical and orbital characterization of spherically symmetric static black holes of self-gravitating new nonlinear electrodynamics model

    gr-qc 2026-03 conditional novelty 4.0 of 10

    PINLED Y^n black holes have charge-driven inward shifts of photon sphere, shadow, and ISCO, with null-geodesic observables distinguishing them from RN more clearly than timelike ones.

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