Статья

Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope

Alireza AllahyariSchool of Astronomy, Institute for Research in Fundamental Sciences (IPM), Niavaran Square, P.O. Box 19395-5746, Tehran, IranMohsen KhodadiSchool of Astronomy, Institute for Research in Fundamental Sciences (IPM), Niavaran Square, P.O. Box 19395-5746, Tehran, IranSunny VagnozziKavli Institute for Cosmology (KICC) and Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, U.KDavid F. MotaInstitute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, N-0315 Oslo, Norway

2020en

ABI

Аннотация

Non-linear electrodynamics (NLED) theories are well-motivated extensions of QED in the strong field regime, and have long been studied in the search for regular black hole (BH) solutions. We consider two well-studied and well-motivated NLED models coupled to General Relativity: the Euler-Heisenberg model and the Bronnikov model. After carefully accounting for the effective geometry induced by the NLED corrections, we determine the shadows of BHs within these two models. We then compare these to the shadow of the supermassive BH M87* recently imaged by the Event Horizon Telescope collaboration. In doing so, we are able to extract upper limits on the black hole magnetic charge, thus providing novel constraints on fundamental physics from this new extraordinary probe.

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Идентификаторы

DOI: 10.1088/1475-7516/2020/02/003

Цитирования и источники

Цитирований: 18Использованных источников: 0

Показатели — AkademScholar