Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-12-21
Phys.Rev.D78:064026,2008
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
6 pages, 4 figures
Scientific paper
10.1103/PhysRevD.78.064026
We compare the phase evolution of equal-mass nonspinning black-hole binaries from numerical relativity (NR) simulations with post-Newtonian (PN) results obtained from three PN approximants: the TaylorT1 and T4 approximants, for which NR-PN comparisons have already been performed in the literature, and the recently proposed approximant TaylorEt. The accumulated phase disagreement between NR and PN results over the frequency range $M\omega = 0.0455$ to $M\omega = 0.1$ is greater for TaylorEt than either T1 or T4, but has the attractive property of decreasing monotonically as the PN order is increased.
Brugmann Bernd
Gopakumar Achamveedu
Hannam Mark
Husa Sascha
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