The Core-Envelope model of anisotropic spherical stars with polytropic core and linear envelope
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Date
2021
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UMT Lahore
Abstract
The purpose of this research work is to construct a relativistic core-envelope model for spherically symmetric compact objects with anisotropic inner fluid distribution. The equation of state for core is polytropic and linear for envelope. All physical parameters are well behaved in the core and envelope region for the compact stars SAX J1808.4−3658 and 4U 1608−52. The physical properties of stars are described well with the help of developed model. The energy conditions are also satisfied in the model. The stability of the model is studied with the help of Tolman-Oppenheimer-Volkoff equations.