Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-05-19
Phys.Rev.D80:124045,2009
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Added missing references; refined data. Version accepted in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.80.124045
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.
Boyle Michael
Mroué Abdul H.
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