Gravitational radiation from compact binaries of inspiraling

by Prof. Guillam Faye

Thursday 20 Dec 2012, 15:00 → 16:00 Europe/Rome

Sala Persico (Dipartimento di Fisica - Ed. G. Marconi)

Both observational and theoretical arguments suggest that black holes may be endowed with intrinsic angular momenta that are non-negligible with respect to their maximum possible value. It is therefore crucial to incorporate those "spins" in modelling compact binaries accurately, as required to build appropriate template banks aimed at analysing the signals of the ground-based gravitational-wave detectors, such as advanced Virgo or LIGO. In the present talk, we shall discuss recent results on the derivation of the post-Newtonian equations of motion of black hole binaries, up to O(1/c^7) (3.5PN order), including spin-orbit effects. The full wave amplitude has been obtained at 2PN order for circular orbits, while we have reached the 3PN order for the spin-orbit contributions to the gravitational-wave phase. The later calculation is particularly interesting because it involves non-linear tail effects that depend on the recent past of the source.