Strong lensing by a Kiselev black hole is shown to depend on the photon-Weyl coupling and on polarization, with critical coupling values that vary with the Kiselev parameter.
Strong Gravitational Lensing in a Charged Squashed Kaluza- Klein G\"{o}del Black hole
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abstract
In this paper we investigate the strong gravitational lansing in a charged squashed Kaluza-Klein G\"{o}del black hole. The deflection angle is considered by the logarithmic term proposed by Bozza et al. Then we study the variation of deflection angle and its parameters $\bar{a}$ and $\bar{b}$ . We suppose that the supermassive black hole in the galaxy center can be considered by a charged squashed Kaluza-Klein black hole in a G\"{o}del background and by relation between lensing parameters and observables, we estimate the observables for different values of charge, extra dimension and G\"{o}del parameters.
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gr-qc 1years
2019 1verdicts
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Strong Gravitational Lensing for Photon Coupled to Weyl Tensor in Kiselev Black Hole
Strong lensing by a Kiselev black hole is shown to depend on the photon-Weyl coupling and on polarization, with critical coupling values that vary with the Kiselev parameter.