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Silhouette of M87*: A new window to peek into the world of hidden dimensions

The recent observation of the shadow of the supermassive black hole M87*, located at the centre of the M87 galaxy, by the Event Horizon Telescope collaboration has opened up a new window to probe the strong gravity regime. In this letter, we explicitly demonstrate the consequences of this observation on brane world black holes, characterized by existence of a negative tidal charge. Our results based on three observables associated with the shadow, namely, angular diameter, deviation from circularity and axis ratio reveal that the existence of a negative tidal charge is more favoured, possibly marking a deviation from general relativity.

preprint2020arXivOpen access
Indrani BanerjeeSumanta ChakrabortySoumitra Sengupta
astro-ph.HEgr-qchep-th
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Indrani BanerjeeSumanta ChakrabortySoumitra Sengupta

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