https://doi.org/10.1140/epjc/s10052-017-5239-1
Regular Article - Theoretical Physics
Emerging anisotropic compact stars in 
gravity
National University of Computer and Emerging Sciences, Lahore Campus, Lahore, Pakistan
* e-mail: farasat.shamir@nu.edu.pk
Received:
6
July
2017
Accepted:
13
September
2017
Published online:
12
October
2017
The possible emergence of compact stars has been investigated in the recently introduced modified Gauss–Bonnet gravity, where 
is the Gauss–Bonnet term and T is the trace of the energy-momentum tensor (Sharif and Ikram, Eur Phys J C 76:640, 2016). Specifically, for this modified 
theory, the analytic solutions of Krori and Barua have been applied to an anisotropic matter distribution. To determine the unknown constants appearing in the Krori and Barua metric, the well-known three models of the compact stars, namely 4U1820-30, Her X-I, and SAX J 1808.4-3658 have been used. The analysis of the physical behaviour of the compact stars has been presented and the physical features like energy density and pressure, energy conditions, static equilibrium, stability, measure of anisotropy, and regularity of the compact stars, have been discussed.
© The Author(s), 2017
