Neutron star universal relations with microscopic equations of state

A. Figura; G. F. Burgio; H. Chen; H.-J. Schulze (INFN Sezione di Catania); J.-B. Wei

arxiv: 1809.04315 · v2 · pith:4K6PJOL5new · submitted 2018-09-12 · 🌌 astro-ph.HE · nucl-th

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) This is my paper

classification 🌌 astro-ph.HE nucl-th

keywords starneutronequationsstatemicroscopicradiirelationsuniversal

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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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Constraints from the GW170817 merger event on the nuclear matter equation of state
nucl-th 2019-07 unverdicted novelty 4.0

GW170817 data constrains the nuclear equation of state to models yielding neutron-star radii of 12-13 km.