Gravitational Lensing by Black Holes in Einsteinian Cubic Gravity

Mohammad Bagher Jahani Poshteh; Robert B. Mann

Gravitational Lensing by Black Holes in Einsteinian Cubic Gravity

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arxiv 1810.10657 v2 pith:AGYDRT2Y submitted 2018-10-25 gr-qc hep-th

Mohammad Bagher Jahani Poshteh , Robert B. Mann This is my paper · ORCID

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We investigate the predictions of Einsteinian Cubic Gravity (ECG) for the lensing effects due to supermassive black holes at the center of Milky Way and other galaxies. Working in the context of spherical symmetry, we obtain the metric function from a continued fraction method and find that both time delays and the angular positions of images considerably deviate from general relativity, as large as milliarcseconds. This suggests that observational tests of ECG are indeed feasible.

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A charged black hole in Einstein-cubic gravity, built from first-law consistency and a continued fraction metric, amplifies charged scalar waves below the standard Reissner-Nordstrom superradiance threshold, with stro...

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