Two complementary techniques are developed for obtaining the asymptotic form of gravitational-wave data at large radii from numerical simulations, in the form of easily implemented algorithms. It is shown that, without extrapolation, near-field effects produce errors in extracted waveforms that can significantly affect LIGO data analysis. The extrapolation techniques are discussed in the context of Newman--Penrose data applied to extrapolation of waveforms from an equal-mass, nonspinning black-hole binary simulation. The results of the two methods are shown to agree within error estimates. The various benefits and deficiencies of the methods are discussed.
@article{arxiv.0905.3177,
title = {Extrapolating gravitational-wave data from numerical simulations},
author = {Michael Boyle and Abdul H. Mroué},
journal= {arXiv preprint arXiv:0905.3177},
year = {2010}
}
Comments
Added missing references; refined data. Version accepted in Phys. Rev. D