Gravitational waves from coalescing binaries: The theory.
Relazione su invito
III - Astrofisica
Aula GSSI Rettorato - Auditorium - Venerdì 27 h 09:00 - 12:00
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The analysis of gravitational-wave (GW) data emitted by coalescing compact binaries, either black holes or neutron stars, relies on theoretical waveform templates. The construction of such waveform templates stems from the precise theoretical knowledge of the dynamics and radiation emitted by the system. Nowadays, this is obtained by means of an interplay between numerical relativity simulations and analytical methods to study the two-body problem in General Relativity. This allows one to construct waveform templates that are, at the same time, highly accurate and computationally efficient. This is needed due to the large numbers (of the order of ten millions) of waveform templates necessary to do the parameter estimation of a typical source. I will thus briefly review the effective one-body approach to the general relativistic two-body dynamics and its importance in the analysis of the astrophysical GW sources detected by LIGO and Virgo