Séminaire Doctoral / Seminar PhD |
| « Post-Newtonian order development on compact binary systems » |
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Tanguy Marchand |
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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. |
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mercredi 13 décembre 2017 - 17:00 Salle du Conseil, Institut d'Astrophysique |
| Page web du séminaire / Seminar's webpage |