Hunting for extra dimensions in the shadow of Sagittarius A*
Abstract
Recently, Vagnozzi and Visinelli's work [Phys. Rev. D 100, 024020 (2020)] reveals that M87*'s shadow establishes an upper limit of AU, where is the AdS curvature radius and 1 AU is one astronomical unit. The Event Horizon Telescope, on the other hand, just captured the first image of the shadow of Sagittarius A* (SgrA*), the Galactic center source associated with a supermassive black hole. In this paper, we are motivated to comprehensively explore a new upper limit of with the shadow of SgrA*, and the findings suggest that AU. Our results improve accuracy by three orders of magnitude. This is also one of the first quantifiable limitations on exotic physics derived from the remarkable first image of the shadow of SgrA*.
Keywords
Cite
@article{arxiv.2205.07207,
title = {Hunting for extra dimensions in the shadow of Sagittarius A*},
author = {Di Wu},
journal= {arXiv preprint arXiv:2205.07207},
year = {2022}
}
Comments
According to arXiv:2205.11314, the limit $\Delta C \lesssim 10%$ in my introduction have not been quoted for Sgr A*'s image as explicitly discussed by the EHT collaboration, so the overall assumption of the quadrupolemoment $\epsilon \lesssim 4$ for Sgr A* is not applicable