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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…
The antikick strikes back: recoil velocities for nearly-extremal binary black hole mergers in the test-mass limit
Alessandro Nagar, Enno Harms, Sebastiano Bernuzzi +1
Gravitational waves emitted from a generic binary black-hole merger carry away linear momentum anisotropically, resulting in a gravitational recoil, or "kick", of the center of mas…
A new gravitational wave generation algorithm for particle perturbations of the Kerr spacetime
Enno Harms, Sebastiano Bernuzzi, Alessandro Nagar +1
We present a new approach to solve the 2+1 Teukolsky equation for gravitational perturbations of a Kerr black hole. Our approach relies on a new horizon penetrating, hyperboloidal…
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…