Abstract
We propose a new compact stellar object model existing in a space filled with a distribution of anisotropic fluid matter for stellar configuration exposed to the hydrostatic equilibrium. An analytical solution was obtained using dark-energy (DE), which is characterized by a equation of state (EoS) of the type p=gamma rho - rho corresponding to the external Schwarzschild vacuum solution through a thin envelope. We have imposed a collective function based on an adjustable coefficient to solve the Einstein field equations (EFEs). We investigate the general physical characteristics of high-density astrophysical objects based on the required solutions, with the inside structure of the stellar objects, such as the energy conditions, stability analysis, mass function, surface redshift function, velocity of sound and compactness of stellar objects through theoretical expression as well as graphic plots. In terms of our results, the physical behavior of this model can be used to model ultra-compact objects.
Highlights
The investigation of DE objects has turned into an interesting subject due to the phenomenon that the expansion of the Universe is accelerating
We propose a new compact stellar object model existing in a space filled with a distribution of anisotropic fluid matter for stellar configuration exposed to the hydrostatic equilibrium
An analytical solution was obtained using dark-energy (DE), which is characterized by a equation of state (EoS) of the type p = γρ − ρ corresponding to the external Schwarzschild vacuum solution through a thin envelope
Summary
The investigation of DE objects has turned into an interesting subject due to the phenomenon that the expansion of the Universe is accelerating. Mazur and Mottola [33,34,35] proposed a model unraveled keeping in mind the ultimate goal of having an answer with the last object without any scenario of singularity or horizons, which they so-called gravastar (GRAvitational VAcuum STAR) In this circumstance, the object (gravastar) is a framework represented by the presence of a thin layer yet not microscopic made of a solid matter, which isolates the interior region through the Schwarzschild outside of outer space. For the model of a star of anisotropic fluid in the DE scenario, where a repulsive gravitational is necessary, it is interesting to suggest a model with this anonymous dependence In this respect, the fluid encloses inside a shell is considered so as to assess the behavior of stability and the physical properties.
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