2016/12/31 by Vijay Varma, P. Ajith, Parameswaran Ajith · 3 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Algorithm #Astrophysics #Binary black hole #Binary number #Black hole (networking) #Computational physics #Computer science #Estimation theory #Geophysics and Sensor Technology #Gravitational wave #LIGO #Mass ratio #Parameter space #Physics #Pulsars and Gravitational Waves Research #Quadrupole #Quantum mechanics #Seismic Waves and Analysis #Spins #Statistics #gr-qc
paper · pdf · doi:10.1103/physrevd.96.124024
published as Phys. Rev. D 96, 124024 (2017) · 10 pages; Version accepted in PRD
openalex created_date 2017/01/06 · openalex publication_date 2017/12/20 · arxiv created 2017/12/21 · arxiv updated 2017/12/27 · openalex updated_date 2026/08/06
We study the effect of nonquadrupolar modes in the detection and parameter estimation of gravitational waves (GWs) from black hole binaries with nonprecessing spins, using Advanced LIGO. We evaluate the loss of the signal-to-noise ratio (SNR) and the systematic errors in the estimated parameters when a quadrupole-mode template family is used to detect GW signals with all the relevant modes. Target signals including nonquadrupole modes are constructed by matching numerical-relativity simulations of nonprecessing black hole binaries describing the late inspiral, merger, and ringdown with post-Newtonian/effective-one-body waveforms describing the early inspiral. We find that neglecting nonquadrupole modes will, in general, cause unacceptable loss in the detection rate and unacceptably large systematic errors in the estimated parameters, for the case of massive binaries with large mass ratios. For a given mass ratio, neglecting subdominant modes will result in a larger loss in the detection rate for binaries with aligned spins. For binaries with antialigned spins, quadrupole-mode templates are more effectual in detection, at the cost of introducing a larger systematic bias in the parameter estimation. We provide a summary of the regions in the parameter space where neglecting nonquadrupole modes will cause an unacceptable loss of detection rates and unacceptably large systematic biases in the estimated parameters.