Numerical Relativity (NR) uses advanced numerical techniques in supercomputers to simulate the relativistic, strong-field dynamics and radiation of merging compact binaries, such as black holes and neutron stars, and other similar phenomena that are governed by Einstein's theory of General Relativity (GR). Analytical relativity (AR) methods, based on Post-Newtonian expansions of the GR equations and black-hole perturbation theory, are also used to study respectfully the early phases of the inspiral of compact object binaries and the resulting black-hole remnant.
The RIT's Numerical Relativity group is one of the largest and internationally renown group in the modeling and simulation of compact binaries in extreme astrophysical environments. The group contributed to the 2005's breakthrough in this field (e.g. see for example the moving puncture approach), which have opened new frontiers in gravitational wave astrophysics. The moving puncture approach has permitted the first calculations gravitational radiation from merging black holes with arbitrary masses abd spins, the discovery of large gravitational-radiation recoils (up to 4000 km/s) from merging spinning supermassive black-holes, the study of spin dynamics effects, such as spin-flips, precession and hang-up orbits and extreme mass-ratio binaries. The original moving puncture papers was recently highlighted by the APS as one of the landmark papers of the century on the subject of general relativity, starting with a contribution from Einstein himself.
You can download some of the associated movies and waveforms data here.
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