Gravitational waves and the two-body problem in general relativity

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• Luc Blanchet (GReCO, Institut d'Astrophysique de Paris)
• Friday 10 November 2017, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact Michalis Agathos.

The gravitational wave detectors LIGO /VIRGO have discovered the signals generated by the coalescence of binary black holes at astronomical distances. The theoretical and numerical works on the two-body problem in general relativity play a very important role when deciphering and interpreting the gravitational wave signals. In this talk, after a general review on gravitational waves and the problem of motion, we shall present the state-of-the-art on approximation methods in general relativity, such as the famous post-Newtonian expansion, which is an expansion when the orbital velocity of the black holes is small with respect to the speed of light. We shall show how useful is this approximation for the recent GW detections, and discuss the latest developments in this field.

This talk is part of the DAMTP Friday GR Seminar series.

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