In this paper, a well-behaved new model of anisotropic compact star in (3+1)-dimensional spacetime has been investigated in the background of Einstein’s general theory of relativity. The model has been developed by choosing grr component as Krori–Barua (KB) ansatz [Krori and Barua in J. Phys. A, Math. Gen. 8 (1975) 508]. The field equations have been solved by a proper choice of the anisotropy factor which is physically reasonable and well behaved inside the stellar interior. Interior spacetime has been matched smoothly to the exterior Schwarzschild vacuum solution and it has also been depicted graphically. Model is free from all types of singularities and is in static equilibrium under different forces acting on the system. The stability of the model has been tested with the help of various conditions available in literature. The solution is compatible with observed masses and radii of a few compact stars like Vela X-1, 4U 1608 − 52, PSR J1614 − 2230, LMC X − 4, EXO 1785 − 248.

中文翻译：

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存在各向异性时具有 Krori-Barua 势的奇异星

本文在爱因斯坦广义相对论的背景下，研究了（3+1）维时空中表现良好的各向异性致密星新模型。该模型是通过选择开发的Grr作为 Krori–Barua (KB) 的组件安萨茨[Krori 和 Barua 在J.物理。A，数学。将军 8(1975) 508]。The field equations have been solved by a proper choice of the anisotropy factor which is physically reasonable and well behaved inside the stellar interior. 内部时空与外部 Schwarzschild 真空解决方案顺利匹配，并且还以图形方式描绘。模型不受所有类型的奇异性影响，在作用于系统的不同力下处于静态平衡。模型的稳定性已经在文献中可用的各种条件的帮助下进行了测试。该解决方案与观察到的一些致密恒星（如船帆）的质量和半径兼容X-1、4U1608 - 52, PSR1614 - 2230, LMCX - 4, 外星人1785 - 248.