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Published December 2009 | Published
Journal Article Open

Extrapolating gravitational-wave data from numerical simulations

Abstract

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.

Additional Information

© 2009 The American Physical Society. Received 19 May 2009; published 29 December 2009. We thank Emanuele Berti, Duncan Brown, Luisa Buchman, Alessandra Buonanno, Yanbei Chen, Eanna Flanagan, Mark Hannam, Sascha Husa, Luis Lehner, Geoffrey Lovelace, Andrea Nerozzi, Rob Owen, Larne Pekowsky, Harald Pfeiffer, Oliver Rinne, Uli Sperhake, Be´la Szila´gyi, Kip Thorne, Manuel Tiglio, and Alan Weinstein for helpful discussions. We especially thank Larry Kidder, Lee Lindblom, Mark Scheel, and Saul Teukolsky for careful readings of this paper in various draft forms and helpful comments. This research has been supported in part by a grant from the Sherman Fairchild Foundation to Caltech and Cornell; by NSF Grants No. PHY-0652952, No. PHY-0652929, and No. DMS- 0553677 and NASA Grant No. NNX09AF96G to Cornell; and by NSF Grants No. PHY-0601459, No. PHY-0652995, No. DMS-0553302 and NASA Grant No. NNG05GG52G to Caltech.

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August 19, 2023
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