https://doi.org/10.1140/epjp/s13360-025-06003-x
Regular Article
Structural features and physical properties of charged X-ray binaries in f(T) modified gravity under Tolman–Kuchowicz spacetime
Department of Physics, Jadavpur University, 700032, Kolkata, West Bengal, India
a
mayukhbandyopadhyay@yahoo.com
Received:
4
November
2024
Accepted:
10
January
2025
Published online:
28
January
2025
Current study is focused on singularity free modeling of the massive and charged compact objects like X5 and X7 in the framework of f(T) modified gravity, where T is the torsional scalar. The modified Chaplygin Gas equation of state has been utilized to describe the core stellar matter. The interior spacetime of the compact stars is matched with exterior Reissner-Nordström spacetime at the boundary of the star. We have obtained an exact singularity-free analytical solution for anisotropic compact stars under hydrostatic equilibrium. The stability criteria of the compact objects in the background of f(T) modified gravity with small positive parameter 
have been investigated. The mass-radius relation also has been acquired for this current realistic model. Further, we have also evaluated a few important properties such as energy density, compactness factor, sound velocities, effective pressures, tidal deformability, relativistic adiabatic index, and surface-redshift of the charged NSs, to check the physical validity of the current model. Moreover, we have found that charge has a great impact on the mass-radius relation. Interestingly, the pressure anisotropy plays a significant role to maintain a stable compact structure under hydrostatic equilibrium. The obtained results are highly compatible with various astrophysical observations as well.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
