2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176183We use the Ernst-Schwarzschild solution for a black hole immersed in a uniform magnetic field to estimate corrections to the bending angle and time delay due-to presence of weak magnetic fields in galaxies and between galaxies, and also due-to influence of strong magnetic field near supermassive black holes. The magnetic field creates a kind of confinement in space, that leads to increasing of the bending angle and time delay for a ray of light propagating in the equatorial plane.5 pages, 2 figures, to be published in Phys. Lett. B, references addedGeneral Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - Theorytext