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Bremen 2017 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 6: Relativistische Astrophysik

GR 6.4: Talk

Tuesday, March 14, 2017, 15:00–15:20, SFG 0140

Simulating generic binary neutron star mergers — •Tim Dietrich1, Sebastiano Bernuzzi2, Bernd Bruegmann3, Maximiliano Ujeviv4, and Wolfgang Tichy51Max 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.

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