Structure of Neutron Star With a Quark Core

Abstract

The equation of state of de-confined quark matter within the MIT bag model is calculated. This equation of state is used to compute the structure of a neutron star with quark core. It is found that the limiting mass of the neutron star is affected considerably by this modification of the equation of state. Calculations are carried out for different choices of the bag constant.

Hot Spin Polarized Strange Quark Stars in the Presence of Magnetic Field Using a Density-Dependent Bag Constant

“…Recently, we have also calculated the structure of polarized SQS at zero temperature [9], the structure of unpolarized SQS at finite temperature [10], structure of the neutron star with the quark core at zero temperature [11] and finite temperature [12,13], structure of spin polarized SQS in the presence of magnetic field at zero temperature using density dependent bag constant [14] and at finite temperature using a fixed bag constant [15]. The aim of the present work is calculating some properties of polarized SQS at finite temperature in the presence of a strong magnetic field using the MIT bag model with a density dependent bag constant.…”

Maximum mass of a hot neutron star with a quark core

“…We have calculated the structure properties of the cold neutron star by considering a quark phase at its core [7] and compared the results with our previous calculations for the neutron star without the quark core [8]. In these works, we have employed the lowest order constrained variational (LOCV) method for the hadronic matter calculations.…”

The Structure of Cold Neutron Star With a Quark Core Within the MIT and NJL Models

“…β is a numerical parameter equal to ρ 0 = 0.17f m −3 and B ∞ is a free parameter which is determined by using the experimental data reported in the CERN SPS. [20,31]. Now, using the energy density from Eq.…”

“…As we know, a neutron star with a quark core is called hybrid star. In our previous works, we have obtained the structure of hybrid star by MIT bag model with fixed and density dependent bag constant model at zero temperature [20] and at finite temperature [21,22]. In those works, we have considered the simplest version of the MIT bag model.…”