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

By A. Allahyari, Mohsen Khodadi, S. Vagnozzi, D. Mota. Journal of Cosmology and Astroparticle Physics, 2019

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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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2818db872c7c7b6d9b884414d2eb33da8727e424

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Citations in the corpus

Shadow and quasinormal modes of a rotating loop quantum black hole (2020, background): “[38] A.”
Black holes with scalar hair in light of the Event Horizon Telescope (2020, background): “For an incomplete list of works in this direction, see for instance [115–167].”
Influence of quintessence dark energy on the shadow of black hole (2020, background): “So far, the study of shadows of black holes has become a subject of great interest [12–39].”