Hunting extra dimensions in the shadow of Sgr A*

TL;DR

This paper suggests that the observed shadow of Sgr A* supports the existence of an extra spatial dimension, regardless of the object's nature, based on consistent measurements from multiple observations.

Contribution

It demonstrates that the shadow measurements of Sgr A* favor models with extra dimensions, independent of the specific ultra compact object type.

Findings

Shadow measurements imply non-zero extra dimensional hairs.

Results are consistent across different observational datasets.

Supports theories with extra spatial dimensions in astrophysical objects.

Abstract

We show that the observed angular diameter of the shadow of the ultra compact object Sgr A*, favours the existence of an extra spatial dimension. This holds irrespective of the nature of the ultra compact object, i.e., whether it is a wormhole or, a black hole mimicker, but with the common feature that both of them have an extra dimensional origin. This result holds true for the mass and the distance measurements of Sgr A* using both Keck and the Gravity collaborations and whether we use the observed image or, the observed shadow diameter. In particular, the central value of the observed shadow or, the observed image diameter predicts non-zero hairs inherited from the extra dimensions.