Possible formation of compact stars in f(R,T) gravity

• Published in: Astrophysics and space science Vol. 361; no. 1; p. 1
• Main Authors: Zubair, M., Abbas, G., Noureen, I.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.01.2016; Springer Nature B.V
• Subjects: Anisotropy; Astrobiology; Astronomy; Astrophysics; Astrophysics and Astroparticles; Cosmology; Energy; Gravity; Observations and Techniques; Original Article; Physics; Physics and Astronomy; Red shift; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Star & galaxy formation; gravity; Compact stars
• ISSN: 0004-640X; 1572-946X
• DOI: 10.1007/s10509-015-2596-9

This paper reports on the investigations regarding the possible formation of compact stars in f ( R , T ) theory of gravity, where R is the Ricci scalar and T is the trace of the energy–momentum tensor. In this connection, we use the analytic solution of the Krori and Barua metric (Krori and Barua in J. Phys. A., Math. Gen. 8:508, 1975 ) for a spherically symmetric anisotropic star in the context of f ( R , T ) gravity. The masses and radii of compact star models, namely Model 1, Model 2, and Model 3, are employed to incorporate the unknown constants in the Krori and Barua metric. The physical features such as regularity at the center, the anisotropy measure, causality, and the well-behaved condition of the above-mentioned class of compact starts are analyzed. Moreover, we also discuss the energy conditions, stability, and surface redshift in f ( R , T ) gravity.