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GR: Fachverband Gravitation und Relativitätstheorie

GR 1: Black Holes I

GR 1.2: Talk

Monday, March 11, 2024, 17:05–17:25, HBR 14: HS 2

Kilometer-scale ultraviolet regulators and astrophysical black holes — •Jens Boos¹ and Christopher D. Carone² — ¹KIT, Karlsruhe, Germany — ²William & Mary, Williamsburg VA, USA

Regular black hole metrics involve a universal, mass-independent regulator that can be up to O(700 km) while remaining consistent with terrestrial tests of Newtonian gravity and astrophysical tests of general relativistic orbits. However, for such large values of the regulator scale the horizon is lost. We solve this problem by proposing mass-dependent regulators. This allows for large, percent-level effects in observables for regular astrophysical black holes. By considering the deflection angle of light and the black hole shadow, we demonstrate the possibility of large observational effects explicitly.