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Hunting for extra dimensions in the shadow of M87
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Cambridge, United Kingdom.ORCID iD: 0000-0002-7614-6677
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Uppsala University, Sweden; University of Amsterdam, The Netherlands.
Number of Authors: 22019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 100, no 2, article id 024020Article in journal (Refereed) Published
Abstract [en]

The Event Horizon Telescope has recently provided the first image of the dark shadow around the supermassive black hole M87*. The observation of a highly circular shadow provides strong limits on deviations of M87*'s quadrupole moment from the Kerr value. We show that the absence of such a deviation can be used to constrain the physics of extra dimensions of spacetime. Focusing on the Randall-Sundrum AdS(5) brane-world scenario, we show that the observation of M87*'s dark shadow sets the limit l less than or similar to 170 AU, where l is the AdS(5) curvature radius. This limit is among the first quantitative constraints on exotic physics obtained from the extraordinary first ever image of the dark shadow of a black hole.

Place, publisher, year, edition, pages
2019. Vol. 100, no 2, article id 024020
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Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-171739DOI: 10.1103/PhysRevD.100.024020ISI: 000475507800008OAI: oai:DiVA.org:su-171739DiVA, id: diva2:1349493
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-09Bibliographically approved

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Vagnozzi, SunnyVisinelli, Luca
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)Nordic Institute for Theoretical Physics (Nordita)
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