collaborators

5 papers

gr-qc2025

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…

gr-qc2025

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…

gr-qc2025

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…

gr-qc2025

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-Dalí is a model based on the effective-…

gr-qc2024

A numerical-relativity surrogate model for hyperbolic encounters of black holes: challenges in parameter estimation

Joan Fontbuté, Tomas Andrade, Raimon Luna +5

We present a surrogate numerical-relativity model for close hyperbolic black-hole encounters with equal masses and spins aligned with the orbital momentum. Our model, generated in…