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Hunting for extra dimensions in the shadow of M87
Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, Dept Phys, Alballova Univ Ctr, Roslagstullsbacken 21A, SE-10691 Stockholm, Sweden;KTH Royal Inst Technol, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden;Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden;Univ Cambridge, Kavh Inst Cosmol KICC, Madingley Rd, Cambridge CB3 0HA, England;Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.ORCID iD: 0000-0002-7614-6677
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics. KTH Royal Inst Technol, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden;Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden;Univ Amsterdam, Gravitat Astroparticle Phys Amsterdam GRAPPA, Inst Theoret Phys Amsterdam, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands;Univ Amsterdam, Delta Inst Theoret Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.ORCID iD: 0000-0001-7958-8940
2019 (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
AMER PHYSICAL SOC , 2019. Vol. 100, no 2, article id 024020
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-390786DOI: 10.1103/PhysRevD.100.024020ISI: 000475507800008OAI: oai:DiVA.org:uu-390786DiVA, id: diva2:1343274
Funder
Swedish Research Council, 638-2013-8993Available from: 2019-08-16 Created: 2019-08-16 Last updated: 2019-08-16Bibliographically approved

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Visinelli, Luca

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