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Effects of waveform model systematics on the interpretation of GW150914

Abbott, B; Abbott, Richard; Abbott, Thomas D; Abernathy, M; Acernese, Fausto; Ackley, K; Adams, C; Adams, T; Addesso, Paolo; Adhikari, Rana X; Altin, Paul; Chow, Jong; Mansell, Georgia; McClelland, David; McManus, David; McRae, Terry; Nguyen, Thanh; Rabeling, David; Scott, Susan M; Shaddock, Daniel; Slagmolen, Bram; Ward, Robert; Yap, Min Jet

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Parameter estimates of GW150914 were obtained using Bayesian inference, based on three semi-analytic waveform models for binary black hole coalescences. These waveform models differ from each other in their treatment of black hole spins, and all three models make some simplifying assumptions, notably to neglect sub-dominant waveform harmonic modes and orbital eccentricity. Furthermore, while the models are calibrated to agree with waveforms obtained by full numerical solutions of Einstein's...[Show more]

dc.contributor.authorAbbott, B
dc.contributor.authorAbbott, Richard
dc.contributor.authorAbbott, Thomas D
dc.contributor.authorAbernathy, M
dc.contributor.authorAcernese, Fausto
dc.contributor.authorAckley, K
dc.contributor.authorAdams, C
dc.contributor.authorAdams, T
dc.contributor.authorAddesso, Paolo
dc.contributor.authorAdhikari, Rana X
dc.contributor.authorAltin, Paul
dc.contributor.authorChow, Jong
dc.contributor.authorMansell, Georgia
dc.contributor.authorMcClelland, David
dc.contributor.authorMcManus, David
dc.contributor.authorMcRae, Terry
dc.contributor.authorNguyen, Thanh
dc.contributor.authorRabeling, David
dc.contributor.authorScott, Susan M
dc.contributor.authorShaddock, Daniel
dc.contributor.authorSlagmolen, Bram
dc.contributor.authorWard, Robert
dc.contributor.authorYap, Min Jet
dc.date.accessioned2021-06-11T01:37:26Z
dc.identifier.issn0264-9381
dc.identifier.urihttp://hdl.handle.net/1885/237282
dc.description.abstractParameter estimates of GW150914 were obtained using Bayesian inference, based on three semi-analytic waveform models for binary black hole coalescences. These waveform models differ from each other in their treatment of black hole spins, and all three models make some simplifying assumptions, notably to neglect sub-dominant waveform harmonic modes and orbital eccentricity. Furthermore, while the models are calibrated to agree with waveforms obtained by full numerical solutions of Einstein's equations, any such calibration is accurate only to some non-zero tolerance and is limited by the accuracy of the underlying phenomenology, availability, quality, and parameter-space coverage of numerical simulations. This paper complements the original analyses of GW150914 with an investigation of the effects of possible systematic errors in the waveform models on estimates of its source parameters. To test for systematic errors we repeat the original Bayesian analysis on mock signals from numerical simulations of a series of binary configurations with parameters similar to those found for GW150914. Overall, we find no evidence for a systematic bias relative to the statistical error of the original parameter recovery of GW150914 due to modeling approximations or modeling inaccuracies. However, parameter biases are found to occur for some configurations disfavored by the data of GW150914: for binaries inclined edge-on to the detector over a small range of choices of polarization angles, and also for eccentricities greater than ∼0.05. For signals with higher signal-to-noise ratio than GW150914, or in other regions of the binary parameter space (lower masses, larger mass ratios, or higher spins), we expect that systematic errors in current waveform models may impact gravitational-wave measurements, making more accurate models desirable for future observations.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishing
dc.rights© 2017 IOP Publishing Ltd
dc.sourceClassical and Quantum Gravity
dc.source.urihttps://iopscience.iop.org/article/10.1088/1361-6382/aa6854
dc.subjectgravitational waves
dc.subjectnumerical relativity
dc.subjectparameter estimation
dc.subjectwaveform models
dc.subjectsystematic errors
dc.subjectGW150914
dc.titleEffects of waveform model systematics on the interpretation of GW150914
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume34
dc.date.issued2017
local.identifier.absfor010505 - Mathematical Aspects of Quantum and Conformal Field Theory, Quantum Gravity and String Theory
local.identifier.ariespublicationa383154xPUB6988
local.publisher.urlhttps://iopscience.iop.org
local.type.statusPublished Version
local.contributor.affiliationAbbott, B, LIGO - California Institute of Technology
local.contributor.affiliationAbbott, Richard, California Institute of Technology
local.contributor.affiliationAbbott, Thomas D, Louisiana State University
local.contributor.affiliationAbernathy, M, American University
local.contributor.affiliationAcernese, Fausto, Universita di Salerno
local.contributor.affiliationAckley, K, University of Florida
local.contributor.affiliationAdams, C, LIGO-Livingston Observatory
local.contributor.affiliationAdams, T, Université Savoie Mont Blanc
local.contributor.affiliationAddesso, Paolo, Universita degli Studi del Sannio
local.contributor.affiliationAdhikari, Rana X, California Institute of Technology
local.contributor.affiliationAltin, Paul, College of Science, ANU
local.contributor.affiliationChow, Jong, College of Science, ANU
local.contributor.affiliationMansell, Georgia, College of Science, ANU
local.contributor.affiliationMcClelland, David, College of Science, ANU
local.contributor.affiliationMcManus, David, College of Science, ANU
local.contributor.affiliationMcRae, Terry, College of Science, ANU
local.contributor.affiliationNguyen, Thanh, College of Science, ANU
local.contributor.affiliationRabeling, David, College of Science, ANU
local.contributor.affiliationScott, Susan M, College of Science, ANU
local.contributor.affiliationShaddock, Daniel, College of Science, ANU
local.contributor.affiliationSlagmolen, Bram, College of Science, ANU
local.contributor.affiliationWard, Robert, College of Science, ANU
local.contributor.affiliationYap, Min Jet, College of Science, ANU
local.description.embargo2099-12-31
local.bibliographicCitation.issue10
local.identifier.doi10.1088/1361-6382/aa6854
dc.date.updated2020-11-23T10:28:05Z
local.identifier.scopusID2-s2.0-85018959494
local.identifier.thomsonID000399335900001
CollectionsANU Research Publications

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