Relativistic Stellar Models with Quadratic Equation of State

Subject Areas : International Journal of Mathematical Modelling & Computations

Manuel Malaver ¹ , Hamed Daei Kasmaei ²

1 - Maritime University of the Caribbean, Department of Basic Sciences, Catia la Mar, Venezuela.
2 - Department of Mathematics and Statistics , Faculty of Science ,Central Tehran Branch ,Islamic Azad University ,Tehran, Iran

Received: 2020-02-01 Accepted : 2020-06-11 Published : 2020-06-20

Keywords: Stellar configurations, Anisotropic fluid distribution, Quadratic equation of state, Charge distribution, Adjustable parameter, Gravitational potential,

Abstract :

In this paper, we have obtained and presented new relativistic stellar configurations considering an anisotropic fluid distribution with a charge distribution and a gravitational potential Z(x) that depends on an adjustable parameter. The quadratic equation of state based on Feroze and Siddiqui viewpoint is used for the matter distribution. The new solutions can be written in terms of elementary and polynomial functions. We have investigated that the radial pressure, metric coefficients, energy density, anisotropy factor, charge density, mass function have been well defined and are regular in the interior of these new models, which satisfy all physical properties in a realistic star.