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GR: Fachverband Gravitation und Relativitätstheorie

GR 202: Numerische Simulationen

GR 202.2: Talk

Tuesday, March 6, 2007, 14:15–14:30, KIP Kl. HS

Calibration of Moving Puncture Simulations — •Bernd Brügmann¹, Jose Gonzalez¹, Mark Hannam¹, Sascha Husa¹, Ulrich Sperhake¹, and Wolfgang Tichy² — ¹University of Jena, Germany — ²Florida Atlantic University, USA

We present single and binary black hole simulations that follow the moving puncture paradigm of simulating black-hole spacetimes without excision, and use moving boxes mesh refinement. Focussing on binary black hole configurations where the simulations cover roughly two orbits, we address five major issues determining the quality of our results: numerical discretization error, finite extraction radius of the radiation signal, physical appropriateness of initial data, gauge choice and computational performance.