A charged anisotropic well-behaved Adler–Finch–Skea solution satisfying Karmarkar condition
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In this paper, a new well-behaved charged anisotropic solution of the field equations was discovered, which can represent a physically possible configuration with the inclusion of some net electric charge, i.e. the solution can become a wellbehaved solution with decreasing sound speed radially outward.Abstract:
In the present paper, we discover a new well-behaved charged anisotropic solution of Einstein–Maxwell’s field equations. We ansatz the metric potential g00 of the form given by Maurya el al. (Eur. Phys. J. C 76(2) (2016) 693) with n = 2. In their paper, it is mentioned that for n = 2, the solution is not well-behaved for neutral configuration as the speed of sound is nondecreasing radially outward. However, the solution can represent a physically possible configuration with the inclusion of some net electric charge, i.e. the solution can become a well-behaved solution with decreasing sound speed radially outward for a charged configuration. Due to the inclusion of electric charge, the solution leads to a very stiff equation-of-state (EoS) with the velocity of sound at the center vr02 = 0.819, vt02 = 0.923 and the compactness parameter u = 0.823 is close to the Buchdahl limit 0.889. This stiff EoS support a compact star configuration of mass 5.418M⊙ and radius of 10.1km.read more
Citations
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Compact star models in class I spacetime
TL;DR: In this paper, the authors have presented completely new exact, finite and regular class I solutions of Einstein's field equations i.e. the solutions satisfy the Karmarkar condition.
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Relativistic charged spheres: compact stars, compactness and stable configurations
TL;DR: In this article, the authors explored a class of static stellar equilibrium configuration of relativistic charged spheres made of a charged perfect fluid, and obtained solutions by the graphical representation that provided strong evidence for a more realistic and viable stellar structure.
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Dissipative collapse of a Karmarkar star
TL;DR: In this article, the Karmarkar condition was employed to model a spherically symmetric radiating star undergoing dissipative gravitational collapse within the framework of classical general relativity.
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Bardeen compact stars in modified f(R) gravity
TL;DR: In this paper, a charged compact star in the scenario of f (R ) theory of gravity was studied and the stability of anisotropic sphere through casualty condition and Adiabatic index was investigated.
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Radiating-collapsing models satisfying Karmarkar condition
TL;DR: In this paper, a class of exact spherical symmetric solutions of the Einstein equations admitting heat-conducting anisotropic fluid as a collapsing matter was presented, and the exterior spacetime was assumed to be the Vaidya metric.
References
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