A new anisotropic compact star model having Matese & Whitman mass function

作者：Bhar Piyali; Ratanpal B S^*

来源：Astrophysics and Space Science, 2016, 361(7): 217.

DOI：10.1007/s10509-016-2811-3

• General relativity
• Matese & Whitman mass function
• Anisotropy
• Compact star

Present paper proposed a new singularity free model of anisotropic compact star. The Einstein field equations are solved in closed form by utilizing Matese & Whitman mass function. The model parameters rho, p(r) and p(t) all are well behaved inside the stellar interior and our model satisfies all the required conditions to be physically acceptable. The model given in the present work is compatible with observational data of compact objects like SAX J 1808.4-3658 (SS1), SAX J 1808.4-3658 (SS2) and 4U 1820-30. A particular model of 4U 1820-30 is studied in detail and found that it satisfies all the condition needed for physically acceptable model. The present work is the generalization of Sharma and Ratanpal (Int. J. Mod. Phys. D 22: 1350074, 2013) model for compact stars admitting quadratic equation of state.

• 出版日期2016-7