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.

Hunting for extra dimensions in the shadow of M87* / Vagnozzi, Sunny; Visinelli, Luca. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 100:2(2019), p. 024020. [10.1103/physrevd.100.024020]

Hunting for extra dimensions in the shadow of M87*

Sunny Vagnozzi;
2019-01-01

Abstract

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.
2019
2
Vagnozzi, Sunny; Visinelli, Luca
Hunting for extra dimensions in the shadow of M87* / Vagnozzi, Sunny; Visinelli, Luca. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 100:2(2019), p. 024020. [10.1103/physrevd.100.024020]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/360132
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