Bounds on $\Lambda$ at the Galactic Center

Prajwal Hassan Puttasiddappa, Muzammil Mushtaq, Willian Ramirez +2

We constrain the cosmological constant, $\Lambda$, using astrometric and spectroscopic observations of the S2 star, supplemented by S1 and S14 stars orbiting Sgr A${}^{\ast }$. We develop a fram…