Bremen 2017 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 6: Relativistische Astrophysik
GR 6.4: Vortrag
Dienstag, 14. März 2017, 15:00–15:20, SFG 0140
Simulating generic binary neutron star mergers — •Tim Dietrich1, Sebastiano Bernuzzi2, Bernd Bruegmann3, Maximiliano Ujeviv4, and Wolfgang Tichy5 — 1Max Planck Institute for Gravitational Physics, Albert Einstein Institute, D-14476 Golm, Germany — 2DiFeST, University of Parma, and INFN Parma I-43124 Parma, Italy — 3Theoretical Physics Institute, University of Jena, 07743 Jena, Germany — 4Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo Andre, Sao Paulo, Brazil — 5Department of Physics, Florida Atlantic University, Boca Raton, FL 33431 US
Binary neutron star mergers are associated with a variety of observable phenomena in the gravitational and electromagnetic spectra. We investigate binary neutron stars in the last milliseconds before and after their merger with full 3D numerical simulations. We explain how we access previously unaccessible regions of the binary neutron star parameter space, e.g. spinning and high mass ratio setups, and we discuss first simulations with generic setups. We also show that recent upgrades allow us to improve the accuracy of the simulation and decrease the phase error of the obtained gravitational waveforms. With this updates our waveforms can be used for validating and improving semi-analytical waveform models.