Our research is about the dynamics of compact objects, like black holes and neutron stars, in binary systems using Einstein's general relativity. We develop computational methods for solving Einstein's equations and for simulating astrophysical events on the largest supercomputers in the World. We model the gravitational waves and their electromagnetic counterparts, and work with the LIGO and Virgo scientific collaboration to support gravitational-wave astronomy observations.

Neutron stars binary mergers are among the main targets
for ground-based gravitational-wave interferometers like
Advanced LIGO and Virgo. Gravitational-waves from these
sources contain unique information that will help
answering many open questions in fundamental physics,
astrophysics and cosmology. The data analysis of the
signals, however, requires *a
priori* a detailed understanding of the source
dynamics and waveform templates.

The **BinGraSp** project, funded by the *European Research
Council (ERC-StG-2015)* aims at developing precise
theoretical models of the gravitational spectrum of
neutron star binaries. We work on new methods for numerical
relativity simulations of compact binaries, and combine the
simulations' data with the most advanced analytical methods
for the solution of the general relativistic relativistic
two-body problem.

Neutron star mergers are unique astrophysical laboratories for probing the dynamical and extreme regimes of all fundamental interactions. The observation of the emitted gravitational and electromagnetic radiation can give us precise information on the properties of matter at supranuclear densities, on the origin of the heaviest element in the Universe and on the nature of some of the most energetic (and mysterious) astrophysical events.

The **MeNeS** project aims at developing the theoretical models
necessary to link some of the electromagnetic and neutrino
counterparts of the gravitational waves to the binary
dynamics. We develop quantitative
models of the merger remnant using first-principles
simulations in general relativity that incorporates an
advanced treatment of the microphysics and of the weak
interactions.