Résumé / Abstract Journal-club_Doctorants

Séminaire Doctoral / Seminar PhD

« Post-Newtonian order development on compact binary systems »

Tanguy Marchand
Institut d'Astrophysique de Paris (Paris, France)

Post-Newtonian (PN) theory enables us to predict the waveform
of the gravitational waves emitted by a system of two compact
objects coalescing in its inspiral phase. State-of-the-art works pro-
vide the phase of the expected signal up to 3.5PN (i.e. up to 1/c^7).
Comparison with numerical relativity, as well as the promising
evolution of gravitational wave detectors incite us to pursue this
computation to a higher order. In our current attempt, we are
trying to reach the phase of the signal at the 4.5PN order (i.e.
1/c^9) for spinless compact binaries in circular orbit. For this pur-
pose, the flux emitted by such a system has to be known at 4.5PN,
and the equation of motion at 4PN. I will explain the methods we
are currently using at IAP to tackle this problem and our latest
results.
mercredi 13 décembre 2017 - 17:00
Salle du Conseil, Institut d'Astrophysique
Page web du séminaire / Seminar's webpage