Constraining Wormhole Geometries using the Orbit of S2 Star and the Event Horizon Telescope

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In this paper we study the possibility of having a wormhole (WH) as a candidate for the Sgr A$^\star$ central object and test this idea by constraining their geometry using the motion of S2 star and the reconstructed shadow images.

• In particular, we consider three WH models, including WHs in Einstein theory, brane-world gravity, and Einstein-Dirac-Maxwell theory.
• To this end, we have constrained the WH throat using the motion of S2 star and shown that the flare out condition is satisfied.
• We also consider the accretion of infalling gas model and study the accretion rate and the intensity of the electromagnetic radiation as well as the shadow images.