Neutron star universal relations with microscopic equations of state.

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

III - Astrofisica
Aula GSSI Rettorato - Auditorium - Venerdì 27 h 09:00 - 12:00
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We study neutron star's structure properties such as moments of inertia, tidal deformabilities and quadrupole moments using a set of microscopic equations of state (EoS) obtained within the Brueckner-Hartree-Fock (BHF) approach to nuclear matter. We also consider the BHF EoS including hyperons, as well as hybrid stars with quark matter at high density, modeled in the Dyson-Schwinger theoretical framework. We shall discuss the validity of several universal relations between the various observables and demonstrate that the microscopic EoS are fully compatible with new constraints imposed by the interpretation of the neutron-star merger event GW170817.

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