New classes of anisotropic models with generalized polytropic equation of state

In this paper, we investigate the gravitational behavior of compact objects with the help of generalized polytropic equation of state in isotropic coordinates. We found three exact solutions of Einstein field equations by taking into account the different values of polytropic index with spherically...

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Bibliographic Details
Published in:	The European physical journal. C, Particles and fields Particles and fields, 2018-06, Vol.78 (6), p.1-8, Article 516
Main Authors:	Mardan, S. A., Noureen, I., Azam, M., Rehman, M. A., Hussan, M.
Format:	Article
Language:	eng
Subjects:	Astronomy Astrophysics and Cosmology Einstein equations Elementary Particles Equations of state Hadrons Heavy Ions Measurement Science and Instrumentation Nuclear Energy Nuclear Physics Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Regular Article - Theoretical Physics Stability analysis String Theory
Online Access:	Get full text
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Summary:	In this paper, we investigate the gravitational behavior of compact objects with the help of generalized polytropic equation of state in isotropic coordinates. We found three exact solutions of Einstein field equations by taking into account the different values of polytropic index with spherically symmetric anisotropic inner fluid distribution. We have regained the masses of PSR J 1614 - 2230 , Vela X-1, Vela 4U, PSR J1903+327 and 4U 1820-30. Speed of sound has been used to analyze the stability of models. The comprehensive analysis indicates that all the models are physically viable and well behaved.
ISSN:	1434-6044 1434-6052