BigApple force and its implications to finite nuclei and astrophysical objects

Abstract

The secondary component of the GW190814 event left us with a question, "whether it is a supermassive neutron star or lightest black-hole?". Recently, Fattoyev et al. have obtained an energy density functional (EDF) named as BigApple, which reproduces the mass of the neutron star is 2.60 $M_{\odot }$ which is well consistent with GW190814 data. This study explores the properties of finite nuclei, nuclear matter, and neutron stars by using the BigApple EDF along with four well-known relativistic mean-field forces, namely NL3, G3, IOPB-I, and FSUGarnet. The finite nuclei properties like binding energy per particle, skin thickness, charge radius, single-particle energy, and two-neutron separation energy are well predicted by the BigApple for a series of nuclei. The calculated nuclear matter quantities such as incompressibility, symmetry energy, and slope parameters at saturation density are consistent with the empirical or experimental values where ever available. The predicted canonical tidal deformability by the BigApple parameter set is well-matched with the GW190814 data. Also, the dimensionless moment of inertia lies in the range given by the analysis of PSR J0737-3039A.

26 pages, 15 figures, 4 tables. Published in IJMPE

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• Dark Matter Effects on the Compact Star Properties
• $I-$Love$-C$ relation for an anisotropic neutron star
• g-mode Oscillations in Neutron Stars with Hyperons
• Pasta properties of the neutron star within effective relativistic mean-field model
• Crustal properties of a neutron star within an effective relativistic mean-field model
• Isotopic shift and search of magic number in the superheavy region
• Magnetised neutron star crust within effective relativistic mean-field model
• Neutron star structure with a new force between quarks
• Spherically symmetric anisotropic strange stars
• Constraining the Surface Curvature of an Anisotropic Neutron Star
• Neutron Decay Anomaly and Its Effects on Neutron Star Properties
• Role of local anisotropy in hybrid stars
• The nuclear symmetry energy and the neutron skin thickness in nuclei
• Influence of Dark Matter on the Magnetized Neutron Star
• Correlation between the curvature and some properties of the neutron star