Neutron star universal relations with microscopic equations of state
J.-B. Wei, A. Figura, G. F. Burgio, H. Chen, H.-J. Schulze (INFN, Sezione di Catania)
TL;DR
This paper investigates universal relations among neutron star properties using microscopic equations of state, constraining radii based on gravitational wave data and confirming some relations across different models.
Contribution
It provides a detailed analysis of neutron star observables with microscopic equations of state and confirms universal relations, refining radius constraints from GW170817 data.
Findings
Neutron star radii are constrained between 12 and 13 km.
Universal relations among neutron star properties are confirmed.
Certain microscopic equations of state are compatible with observational data.
Abstract
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.
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