A Comparison of search templates for gravitational waves from binary inspiral

Details A Comparison of search templates for gravitational waves from binary inspiral A Comparison of search templates for gravitational waves from binary inspiral

2000-10-04

arxiv.org/abs/gr-qc/0010009v4

Phys.Rev. D63 (2001) 044023; Erratum-ibid. D72 (2005) 029902

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

eta-dependent tail terms corrected after related errata by Blanchet (2005)

Scientific paper

10.1103/PhysRevD.63.044023

We compare the performances of the templates defined by three different types of approaches: traditional post-Newtonian templates (Taylor-approximants), ``resummed'' post-Newtonian templates assuming the adiabatic approximation and stopping before the plunge (P-approximants), and further ``resummed'' post-Newtonian templates going beyond the adiabatic approximation and incorporating the plunge with its transition from the inspiral (Effective-one-body approximants). The signal to noise ratio is significantly enhanced (mainly because of the inclusion of the plunge signal) by using these new effective-one-body templates relative to the usual post-Newtonian ones for binary masses greater than $ 30 M_\odot$, the most likely sources for initial laser interferometers. Independently of the question of the plunge signal, the comparison of the various templates confirms the usefulness of using resummation methods. The paper also summarizes the key elements of the construction of various templates and thus can serve as a resource for those involved in writing inspiral search software.

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