Article

Constraining wormhole geometries using the orbit of S2 star and the Event Horizon Telescope

Kimet JusufiPhysics Department, State University of Tetovo, Ilinden Street nn, 1200, Tetovo, North MacedoniaSaurabh KumarDepartment of Physics, Dyal Singh College, University of Delhi, Delhi, 110003, IndiaMustapha Azreg‐AïnouEngineering Faculty, Başkent University, Bağlıca Campus, 06790, Ankara, TurkeyMubasher JamilInstitute for Theoretical Physics and Cosmology, Zhejiang University of Technology, Hangzhou, 310023, ChinaQiang WuInstitute for Theoretical Physics and Cosmology, Zhejiang University of Technology, Hangzhou, 310023, ChinaCosimo BambiCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, Shanghai, 200438, China

2022en

ABI

Abstract

Abstract In this paper we study the possibility of having a wormhole (WH) as a candidate for the Sgr A $$^\star $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow/> <mml:mo>⋆</mml:mo> </mml:msup> </mml:math> 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.

Identifiers

DOI: 10.1140/epjc/s10052-022-10603-7

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