Comparison between numerical relativity and a new class of post-Newtonian gravitational-wave phase evolutions: The nonspinning equal-mass case

Gopakumar, Achamveedu, Hannam, Mark ORCID: https://orcid.org/0000-0001-5571-325X, Husa, Sascha and Brügmann, Bernd 2008. Comparison between numerical relativity and a new class of post-Newtonian gravitational-wave phase evolutions: The nonspinning equal-mass case. Physical Review D 78 (6) , 064026. 10.1103/PhysRevD.78.064026

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Abstract

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 Mω=0.0455 to Mω=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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	American Physical Society
ISSN:	1550-7998
Last Modified:	20 Oct 2022 08:18
URI:	https://orca.cardiff.ac.uk/id/eprint/27872

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