Neutron star universal relations with microscopic equations of state

J. -B. Wei, A. Figura, G. F. Burgio, H. Chen, H. -J. Schulze

Published 2018-09-12Version 1

We calculate neutron star's moment of inertia and deformabilities using various microscopic equations of state for nuclear and hybrid star configurations. Correlations between the various observables are examined and we confirm several universal relations. We focus in particular on the constraints for the neutron star radii imposed by a determination of the average tidal deformability of the binary neutron star system GW170817. We find compatible radii between 12 and 13 kilometers and identify the suitable equations of state.