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A charged anisotropic well-behaved Adler-Finch-Skea solution Satisfying Karmarkar Condition

General Physics 2017-07-05 v2

Abstract

In the present article, we discover a new well-behaved charged anisotropic solution of Einstein-Maxwell's field equations. We ansatz the metric potential g00g_{00} of the form given by Maurya el al. (arXiv:1607.05582v1) with n=2n=2. In their article it is mentioned that for n=2n=2 the solution is not well-behaved for neutral configuration as the speed of sound is non-decreasing radially outward. However, the solution can represent a physically possible configuration with the inclusion of some net electric charged 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 charged the solution leads to a very stiff equation of state (EoS) with the velocity of sound at the center vr02=0.819, vt02=0.923v_{r0}^2=0.819, ~v_{t0}^2=0.923 and the compactness parameter u=0.823u=0.823 is closed to the Buchdahl limit 0.889. This stiff EoS support a compact star configuration of mass 5.418M5.418M_\odot and radius of 10.1km10.1 km.

Keywords

Cite

@article{arxiv.1702.00299,
  title  = {A charged anisotropic well-behaved Adler-Finch-Skea solution Satisfying Karmarkar Condition},
  author = {Piyali Bhar and Ksh. Newton Singh and Farook Rahaman and Neeraj Pant and Sumita Banerjee},
  journal= {arXiv preprint arXiv:1702.00299},
  year   = {2017}
}

Comments

Published in Int. J. Mod. Phys. D 0, 1750078 (2017)