Testing alternative theories of gravity by fitting the hot-spot data of Sgr A* Misbah Shahzadi, Martin Kološ, Zdeněk Stuchlík and Yousaf Habib Eur. Phys. J. C, 82 5 (2022) 407 Published online: 05 May 2022 DOI: 10.1140/epjc/s10052-022-10347-4