Hunting for extra dimensions in the shadow of M87*

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 $\ell \lesssim 170\mathrm{AU}$, where $\ell$ 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.

v3: references added, version published in PRD

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Cited by in corpus (255)

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• A review on analytical studies in Gravitational Lensing
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• Testing the nature of Gauss-Bonnet gravity by four-dimensional rotating black hole shadow
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• Images from disk and spherical accretions of hairy Schwarzschild black holes
• Investigating effects of dark matter on photon orbits and black hole shadows
• Rotating black holes without ${\mathbb{Z}}_2$ symmetry and their shadow images
• Hunting extra dimensions in the shadow of Sgr A*
• Observational predictions of LQG motivated polymerized black holes and constraints from Sgr A* and M87*
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• Shadows and precession of orbits in rotating Janis-Newman-Winicour spacetime
• Bounds on Photon Spheres and Shadows of Charged Black Holes in Einstein-Gauss-Bonnet-Maxwell Gravity
• Rotating dirty black hole and its shadow
• Primordial regular black holes as all the dark matter. II. Non-time-radial-symmetric and loop quantum gravity-inspired metrics
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• Asymptotically locally flat and AdS higher-dimensional black holes of Einstein-Horndeski-Maxwell gravity in the light of EHT observations: shadow behavior and deflection angle
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• Thermodynamics and Shadows of quantum-corrected Reissner-Nordström black hole surrounded by quintessence
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• Constraining Fundamental Physics with the Event Horizon Telescope
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• The effect of scalar hair on the charged black hole with the images from accretions disk
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• Shadows and Optical Appearances of Black Holes in $R^2$ Gravity
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• Probing extra dimensions through cosmological observations of dark energy
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