Troisième Assemblée Générale du GdR Ondes Gravitationnelles

Session

Groupe de travail: Formes d'onde

15 oct. 2020, 14:45

En ligne

51. Towards the gravitational wave phase of compact binaries with 4PN precision

François Larrouturou (IAP)

15/10/2020 14:45

FORMES D’ONDE

The precise knowledge of the gravitational phase of compact binaries is crucial to the detection methods for gravitational waves. To this days, we know it analytically (for non-spinning systems) up to the 3.5 post-Newtonian (PN) order, ie. up to the (v/c)^7 correction beyond the leading order. If this precision is sufficient for the data analysis of the current generation of detectors, the...

71. Tidal effects in the gravitational-wave phase of compact binaries

Quentin Henry (Institut d'Astrophysique de Paris)

15/10/2020 15:00

FORMES D’ONDE

We compute the gravitational-wave (GW) energy flux up to the next-to-next-to-leading (NNL) order of tidal effects in a spinless compact binary system on quasi-circular orbits. Starting from an effective matter action, we obtain the stress-energy tensor of the system, which we use in a GW generation formalism based on multipolar-post-Minkowskian (MPM) and post-Newtonian (PN) approximations. The...