Constraining Bag constant for Hybrid Neutron stars

Abstract

We study the star matter properties for Hybrid equation of state (EoS) by varying the bag constant. We use the Effective-Field-Theory motivated Relativistic Mean-Field model (E-RMF) for hadron phase with recently reported FSUGarnet, G3 and IOPB-I parameter sets. The result of NL3 and NL3$\omega \rho$ sets are also shown for comparison. The simple MIT Bag model is applied for the quark phase to construct the hybrid EoS. The hybrid neutron star mass and radius are calculated by varying with $B^{1/4}$ to constrain the $B^{1/4}$ values. It is found that $B^{1/4}$=130-160 MeV is suitable for explaining the quark matter in neutron stars.

arXiv comment18 pages, 6 figures: Published in International Journal of Modern Physics E

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• Properties of Hybrid Stars with Density Dependent Bag Model
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• Comprehensive Analysis of Constructing Hybrid Stars with an RG-consistent NJL Model
• Hadron-quark phase transition in the neutron star with vector MIT bag model and Korea-IBS-Daegu-SKKU functional
• How Neutron Star Observations Point Towards Exotic Matter: Existing Explanations and a Prospective Proposal