Séminaire / Seminar GReCO |
| « Gravitational waves and compact binaries: the post-Newtonian approach » |
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Clifford Will |
| The completion of a network of advanced laser-interferometric gravitational-wave observatories will soon make possible the study of the inspiral and coalescence of binary systems of compact objects (neutron stars and black holes), using gravitational radiation. To extract useful information from the waves, theoretical general relativistic gravitational waveforms will be used as templates, cross-correlated against the detector outputs. The templates must be extremely accurate, probably as accurate as O[(v/c)^6] beyond the predictions of the simple quadrupole formula. We summarize a method, known as Direct Integration of the Relaxed Einstein Equations (DIRE), for calculating equations of motion and gravitational radiation to high orders in v/c. We also describe a new tool, based on high post-Newtonian order equations, for diagnosing the physical content of initial data models for quasi-equilibrium binary orbits, using numerical relativity. |
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jeudi 4 mars 2004 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |