The BigApple force and it's implications to finite nuclei and astrophysical objects
The mass gap in the secondary component of the GW190814 event left us, "whether it is a super-massive neutron star or light black-hole?". Recently, Fattoyev et al. have predicted the mass of the secondary component is 2.60 M_{\odot} based on the BigApple parameter set. We study the properties of finite nuclei, nuclear matter and neutron star by using the BigApple parameter set along with four well-known relativistic mean-field forces namely NL3, G3, IOPB-I and FSUGarnet. The predicted nuclear properties like binding energy per particle, skin thickness, charge radius, single-particle energy and two-neutron separation energy are well satisfied by the BigApple for a series of nuclei. The calculated nuclear matter quantities such as incompressibility, symmetry energy and its slope parameters are consistent with the empirical/experimental values available till date. The canonical tidal deformability of the BigApple is well suited by the GW190814 data. The dimensionless moment of inertia lies in the range given by the analysis of PSR J0737-3039A. In spite of all the success, the equation of state produced by the BigApple doesn't follow the flow data and suggest a refitting of the force parameters along with the additional coupling terms.