Hunting for extra dimensions in the shadow of M87* - INSPIRE

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Hunting for extra dimensions in the shadow of M87*

Sunny Vagnozzi
(
- Stockholm U., OKC and
- Nordita and
- Cambridge U., KICC
)
,
Luca Visinelli
(
- Nordita and
- Uppsala U.
)

May 29, 2019

7 pages

Published in:

Phys.Rev.D 100 (2019) 2, 024020

Published: Jul 13, 2019

e-Print:

1905.12421 [gr-qc]

DOI:

10.1103/PhysRevD.100.024020

View in:

ADS Abstract Service

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Abstract: (APS)

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 AdS5 brane-world scenario, we show that the observation of M87*’s dark shadow sets the limit ℓ≲170 AU, where ℓ is the AdS5 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.

Note:

v3: references added, version published in PRD

General relativity, alternative theories of gravity
space-time: higher-dimensional
anti-de Sitter
black hole
Randall-Sundrum model
curvature
horizon
moment
Kerr
shadowing

References(106)

Figures(0)

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