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HK: Fachverband Physik der Hadronen und Kerne

HK 33: Nuclear Astrophysics IV

HK 33.1: Vortrag

Donnerstag, 19. März 2026, 13:45–14:00, PHIL A 602

Systematic Study of EOS Effects in BNS Mergers — •Maximilian Jacobi — Friedrich-Schiller-Universität, Jena, Germany

Observations of binary neutron star (BNS) mergers are among the most promising opportunities to constrain the nuclear equation of state (EOS) at intermediate to high density with multi-messenger astronomy. Vice versa, it is crucial to understand how observables such as gravitational waves and the ejection of matter depend on the EOS. However, most BNS merger simulation studies employ a relatively small number of EOS models chosen in an arbitrary fashion due to the limited availability of EOS models. Therefore, derived relations between observables and EOS properties are usually given in terms of single parameters such as the tidal polarizability or the radius of a cold neutron star of a characteristic mass. In this talk I will present a set of BNS merger simulations employing a set of microphysical EOS with systematically varied properties. This approach allows us to study the impact of the EOS properties at high and intermediate densities independently and derive a more detailed understand of the interplay between BNS mergers and nuclear physics.

Keywords: neutron star; merger; equation of state