Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 23: Nuclear Astrophysics II
HK 23.5: Vortrag
Dienstag, 28. März 2017, 15:15–15:30, F 33
Investigation of thermal effects on the equation of state and radii of neutron stars — •Sabrina Schäfer1,2, Carlos Mattes1, Almudena Arcones1,3, and Achim Schwenk1,2,4 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH — 4Max-Planck-Institut für Kernphysik, Heidelberg
Recently, a set of cold representative equations of state have been derived from calculations based on chiral effective field theory, combined with constraints from neutron star observations. This made it possible to derive an uncertainty band for the equation of state and the radius of cold neutron stars. In this work, we study finite temperature effects on realistic equations of state of hot and dense matter and the resulting proto--neutron star behavior following a core--collapse supernova. Using a method for including thermal effects in the equation of state, we investigate the impact of finite--temperature microphysics on the radii of neutron stars and the contraction behavior of the proto--neutron star during the explosion.
*This work is supported by the DFG through Grant SFB 1245.