How the bulk properties of nuclear matter influence neutron star observables?

Not scheduled


Platja d'Aro, Girona, Spain


Mr Péter Pósfay (Wigner Researc Centre for Physics)


Description of dense nuclear matter rely on the experimental constraints coming from the properties of "normal" nuclear matter found in nuclei and observational data from neutron stars which consist of ultra dense nuclear matter. In this presentation I show how the parameters of nuclear matter (effective nucleon mass, compressibility, and proton neutron asymmetry) influence the properties of neutron stars by using multiple Walecka type models with different scalar self interaction terms. In relativistic mean field theories of nuclear matter the values of the Landau mass and nucleon effective mass are not independent hence they can not be fitted in a given model simultaneously, which gives at least two different parametrization of the same model. The effect of this ambiguity on neutron star observable is studied by solving The Tollmann-Oppenheimer-Volkov equations using these different parametrizations. The sensitivity of the M-R diagram to different parametrizations of a given model is also studied especially in the case of maximum mass neutron stars.

Primary author

Mr Péter Pósfay (Wigner Researc Centre for Physics)


Dr Antal Jakovác (Eötvös Loránd University Budapest) Dr Gergey Barnaföldi (Wigner Research Centre for Physics)

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