Double-layered anisotropic stellar model of embedding class I with gaseous envelope
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The current paper presents a double-layered neutral anisotropic stellar model in general relativistic setting. The model is developed by using Einstein field equations and class I embedding condition. We consider the core with quark matter obeying linear equation of state and envelope layer with gaseous matter admitting Chaplygin gas equation of state. The interior and exterior metric coefficients match smoothly at the interface of core and envelope layers and at the stellar surface. The profiles for matter variables, stability and energy conditions show acceptable trend for physical stellar models. In this model, stellar masses and radii consistent with compact stars HerX-1, 4U1538-52, SAXJ1808.4-3658, CenX-3 and SMCX-1 are generated. We note that studies of multi-layered stars with gaseous envelope and embedding class I condition are missing in investigations conducted in the past.
Description
Abstract. Full text is available at https://doi.org/10.1016/j.newast.2024.102216
Keywords
Stellar model, Anisotropic stellar model, Gaseous envelope, Stellar surface, stellar model
Citation
Mathias, A. V., Mkenyeleye, J. M., & Sunzu, J. M. (2024). Double-layered anisotropic stellar model of embedding class I with gaseous envelope. New Astronomy, 110, 102216.