Radial oscillations and stability of compact stars in f(R, T) = R+ 2β T gravity

Date
2021-04-22Author
Pretel, Juan M. Z.
Jorás, Sergio E.
Reis, Ribamar R. R.
Arbañil, José D. V.
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ABSTRACT
We examine the static structure configurations and radial stability of compact stars within the context of f(R, T) gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering the f(R, T)=R+2β T functional form, with β being a constant, we derive the corresponding hydrostatic equilibrium equation and the modified Chandrasekhar's pulsation equation. The mass-radius relations and radial mode frequencies are obtained for some realistic equations of state. Our results show that the traditional stellar stability criteria, namely, the necessary condition d M/dρc >0 and sufficient condition ω2 >0, still hold in this theory of gravity.
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Bibliographic citation
Pretel, J. M., ...[et al.]. (2021). Radial oscillations and stability of compact stars in f(R, T) = R+ 2β T gravity. Journal Of Cosmology And Astroparticle Physics, 4(64). https://doi.org/10.1088/1475-7516/2021/04/064
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPN por restricciones de la casa editorial donde ha sido publicado.