Speaker
Description
There are plenty of models for the neutron star (NS) equation of state (EoS) on the astrophysical market. While they are very diverse (nucleonic, hyperonic, or hybrid, based on different microphysics), it is widely known that some macroscopic NS properties show universal correlations which are largely independent of a specific EoS model. Such universalities have several astrophysical applications. First, they form a handful tool to constrain the EoS from observational data on masses and radii of NSs. Second, they give a hint of what future observations may be the most informative for strengthening EoS constraints. Third, they allow to construct semi-analytic methods to solve the inverse NS hydrostatics problem, i.e. to determine physical conditions in centers of individual NSs based on their observed properties. In this talk, we show how these applications work for existing observations of NS masses and radii, and briefly discuss origins of the considered universalities.
