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GR: Fachverband Gravitation und Relativitätstheorie

GR 202: Numerische Simulationen

GR 202.6: Talk

Tuesday, March 6, 2007, 15:15–15:30, KIP Kl. HS

Relativistic Simulations of Neutron Star Mergers — •Roland Oechslin — Max-Planck-Institue fuer Astrophysik, Garching, D

An extended set of binary neutron star merger calculations is presented. The relativistic hydrodynamics simulations are based on the conformally flat approximation to GR and are performed with a Smoothed Particle Hydrodynamics code for the gas treatment. We use the two physical finite temperature equations of state (EoS) of Shen and Lattimer&Swesty, an ideal-gas EoS and the cold EoS of Akmal et al. extended with an ideal gas-like thermal contribution.

From the calculations, we extract torus masses, ejecta masses and gravitational waves. We assess the dependence of these obervables on the neutron star masses, their spins and the EoS.