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We show that the observed angular diameter of the shadow of the ultracompact object Sgr A*, favors the existence of an extra spatial dimension. This holds irrespective of the nature of the ultracompact 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 nonzero hairs inherited from the extra dimensions.
Banerjee et al. (Thu,) studied this question.
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