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Gravitational lensing by a charged black hole of string theory

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arxiv gr-qc/0306016 v1 pith:HUBPCCZF submitted 2003-06-04 gr-qc astro-phhep-th

A. Bhadra This is my paper · ORCID
classification gr-qcastro-phhep-th
keywords blackholelensingstringchargedgmghsgravitationaltheory
verification ladder T0 review T1 audit T2 compute T3 formal

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We study gravitational lensing by the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) charged black hole of heterotic string theory and obtain the angular position and magnification of the relativistic images. Modeling the supermassive central object of the galaxy as a GMGHS black hole, we estimate the numerical values of different strong-lensing parameters. We find that there is no significant string effect present in the lensing observables in the strong-gravity scenario.

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Cited by 3 Pith papers

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

  1. Probing Lorentz Symmetry Violation through Lensing Observables of Rotating Black Holes

    gr-qc 2025-08 reject novelty 5.0 of 10

    A rotating Bumblebee black hole is shown to produce strong-lensing observables that deviate from Kerr, with EHT shadow data and an Einstein ring observation used to constrain the Lorentz-violating parameter ell.

  2. Strong gravitational lensing by black hole in F(R) Euler Heisenberg Gravity's Rainbow

    astro-ph.GA 2025-07 conditional novelty 4.0 of 10

    Applying the strong deflection limit to the F(R)-Euler-Heisenberg-Rainbow black hole gives lensing observables that increase with the Euler-Heisenberg parameter and decrease with charge.

  3. Deflection of Light due to Kerr Sen Black Hole in Heterotic String Theory using Material Medium Approach

    gr-qc 2025-04 unverdicted novelty 4.0 of 10

    Derives the far-field light deflection angle for the Kerr-Sen black hole by constructing a refractive index that includes frame-dragging and compares the result to Kerr and Schwarzschild cases in general relativity.

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