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arXiv · 1101.5492

Initial data transients in binary black hole evolutions

Nigel Bishop·Denis Pollney·Christian Reisswig
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Abstract

We describe a method for initializing characteristic evolutions of the Einstein equations using a linearized solution corresponding to purely outgoing radiation. This allows for a more consistent application of the characteristic (null cone) techniques for invariantly determining the gravitational radiation content of numerical simulations. In addition, we are able to identify the {\em ingoing} radiation contained in the characteristic initial data, as well as in the initial data of the 3+1 simulation. We find that each component leads to a small but long lasting (several hundred mass scales) transient in the measured outgoing gravitational waves.

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Nigel Bishop, Denis Pollney, Christian Reisswig. 2011-01-28. Initial data transients in binary black hole evolutions. https://doi.org/10.1088/0264-9381%2F28%2F15%2F155019

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