Study of anisotropic compact stars in f(R, T, RχξTχξ) gravity

This paper aims to examine the composition of various spherically symmetric star models which are coupled with anisotropic configuration in f (R, T, Q) gravity, where Q = R chi xi T chi xi. We discuss the physical features of compact objects by employing bag model equation of state and construct the modified field equations in terms of Krori-Barua ansatz involving the unknowns (A, B, C). The observational data of 4U 1820-30, Vela X-I, SAX J 1808.4-3658, RXJ 1856-37 and Her X-I are used to calculate these unknowns and bag constant B-c. Further, we observe the behaviour of energy density, radial and tangential pressure as well as anisotropy through graphical interpretation for a viable model R+rho Q of this gravity. For a particular value of the coupling constant e, we study the behaviour of mass, compactness, red-shift and the energy bounds. The stability of the considered stars is also checked by using two criteria. We conclude that our structure developed in this gravity is in good agreement with all the physical requirements.

Automated summary

This paper examines the composition of various spherically symmetric star models coupled with anisotropic configuration in f (R, T, Q) gravity. The physical features of compact objects are discussed using a bag model equation of state, and modified field equations are constructed with unknowns (A, B, C) in terms of the Krori-Barua ansatz. Observational data of several stars are used to calculate the unknowns and the bag constant B-c. The behavior of energy density, pressure, and anisotropy is observed through graphical interpretation. The stability of the considered stars is also checked using two criteria. The structure developed in this gravity is found to be in good agreement with all physical requirements.