Browsing by Author "Lighuda, Avirt S"

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    Three-layered star comprising polytropic, quark and gaseous matter
    (Springer, 2022) Lighuda, Avirt S; Maharaj, Sunil D; Sunzu, Jefta M; Mureithi, Eunice W
    We construct a new exact model for a dense stellar object utilising the Einstein–Maxwell system of equations. The model comprises three interior regions with distinct equations of state (EoS): the polytropic EoS at the core region, linear EoS at the intermediate region and Chaplygin EoS at the envelope region. Our model can regain earlier solutions. A physical analysis reveals that the matter variables, metric functions and other physical conditions are well behaved and consistent in the study of dense stellar objects. Matching of the boundary layers is done with help of the Reissner–Nordstrom exterior space–time. An interesting feature is that the innermost region is outfitted with a polytropic EoS, and this study extends a core–envelope model developed by Mardan, Noureen and Khalid into a three-layered mode