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.