Constraints on the dark mass distribution surrounding Sgr A*: simple ${\chi }^2$ analysis for the redshift of photons from orbiting stars

Yohsuke Takamori, Shogo Nishiyama, Takayuki Ohgami +3

Sagittarius A* (Sgr A*) is the central supermassive black hole with the mass $\sim 4\times 10^6{M}_{\odot }$ in the Milky Way and stars are orbiting around it. In May 2018, one of th…