Bremen 2017 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 4: Klassische Allgemeine Relativitätstheorie 1

GR 4.2: Talk

Tuesday, March 14, 2017, 09:10–09:30, SFG 0140

Recent analytic results for spin effects of black hole binaries — •Jan Steinhoff — Albert Einstein Institute Potsdam

Black holes binaries are the most prominent source for current gravitational wave observatories. Spin effect are expected to be important in particular for long waveforms, as demonstrated by the event GW151226. This talk discusses recent analytic results for spin effects of black hole binaries. The leading order spin effects in the post-Newtonian approximation can be summed to all orders in spin, leading to a connection between spin effects in comparable mass binaries and test body motion in Kerr spacetime. Furthermore, spin effects were computed to fourth order in the post-Newtonian approximation. We give an outlook how these recent results can improve models for spin effects in the strong-field regime. For these investigations it turns out to be useful to understand the choice of a center of the black holes as a gauge symmetry in a point-particle action.