6 papers
Exact Mass Conservation in Binary Neutron Star Merger Simulations
Boris Daszuta, Sebastiano Bernuzzi, Joan Fontbuté +4
A long-standing problem in the simulation of neutron star spacetimes is the treatment of vacuum regions outside the stars. The use of an artificial low-density atmosphere is a comm…
High-order effective-one-body tidal interactions and gravitational scattering
Malte Schulze, Sebastiano Bernuzzi, Piero Rettegno +3
Using state-of-the-art scattering results in post-Minkowskian (PM) gravity, we improve the tidal sector of four different flavors of the effective-one-body (EOB) formalism. We nota…
Gravitational scattering of two neutron stars
Joan Fontbuté, Sebastiano Bernuzzi, Piero Rettegno +2
We present the first numerical relativity simulations of the gravitational scattering of two neutron stars. Constraint-satisfying initial data for two equal-mass nonspinning sequen…
Perturbative Hyperboloidal Extraction of Gravitational Waves in 3+1 Numerical Relativity
Sebastiano Bernuzzi, Joan Fontbuté, Simone Albanesi +1
We present a framework to propagate to null infinity gravitational waves computed at timelike worldtubes in the interior of a 3+1 (Cauchy) numerical relativity simulations. In our…
Covariant and Gauge-invariant Metric-based Gravitational-waves Extraction in Numerical Relativity
Joan Fontbuté, Sebastiano Bernuzzi, Simone Albanesi +5
We revisit the problem of gravitational-wave extraction in numerical relativity with gauge-invariant metric perturbation theory of spherical spacetimes. Our extraction algorithm al…
Effective-one-body modeling for generic compact binaries with arbitrary orbits
Simone Albanesi, Rossella Gamba, Sebastiano Bernuzzi +3
We present the first unified model for the general relativistic dynamics and gravitational radiation of generic compact binaries. TEOBResumS-Dalà is a model based on the effective…