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GR: Fachverband Gravitation und Relativitätstheorie

GR 9: Numerische Relativitätstheorie I

GR 9.5: Vortrag

Mittwoch, 27. Februar 2013, 15:00–15:15, HS 6

numerical solution of the 2+1 Teukolsky equation on a hyperboloidal and horizon penetrating foliation of Kerr — •Enno Harms, Sebastiano Bernuzzi, and Bernd Brügmann — Theoretical Physics Institute, University of Jena, 07743 Jena, Germany

We present a novel formulation of the Teukolsky equation for generic spin perturbations on the hyperboloidal and horizon penetrating foliation of Kerr proposed recently by Racz and Toth. An additional, spin-dependent rescaling of the field variable can be used to achieve stable, long-term, and accurate time-domain evolutions of generic spin perturbations. As an application we investigate numerically the late-time decays of scalar, electromagnetic, and gravitational perturbations by means of 2+1 evolutions.