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Simulations of rotating neutron star collapse with the puncture gauge: end state and gravitational waveforms
Tim Dietrich, Sebastiano Bernuzzi
We reexamine the gravitational collapse of rotating neutron stars to black holes by new 3+1 numerical relativity simulations employing the Z4c formulation of Einstein equations, th…
Modeling the dynamics of tidally-interacting binary neutron stars up to merger
Sebastiano Bernuzzi, Alessandro Nagar, Tim Dietrich +1
The data analysis of the gravitational wave signals emitted by coalescing neutron star binaries requires the availability of an accurate analytical representation of the dynamics a…
Spinning black hole in the puncture method: Numerical experiments
Tim Dietrich, Bernd Bruegmann
The strong-field region inside a black hole needs special attention during numerical simulation. One approach for handling the problem is the moving puncture method, which has beco…
Quasiuniversal properties of neutron star mergers
Sebastiano Bernuzzi, Alessandro Nagar, Simone Balmelli +2
Binary neutron star mergers are studied using nonlinear 3+1 numerical relativity simulations and the analytical effective-one-body (EOB) model. The EOB model predicts quasiuniversa…