Back to Search Start Over

BayesWave analysis pipeline in the era of gravitational wave observations.

Authors :
Cornish, Neil J.
Littenberg, Tyson B.
Bécsy, Bence
Chatziioannou, Katerina
Clark, James A.
Ghonge, Sudarshan
Millhouse, Margaret
Source :
Physical Review D: Particles, Fields, Gravitation & Cosmology. Feb2021, Vol. 103 Issue 4, p1-1. 1p.
Publication Year :
2021

Abstract

We describe updates and improvements to the BayesWave gravitational wave transient analysis pipeline, and provide examples of how the algorithm is used to analyze data from ground-based gravitational wave detectors. BayesWave models gravitational wave signals in a morphology-independent manner through a sum of frame functions, such as Morlet-Gabor wavelets or chirplets. BayesWave models the instrument noise using a combination of a parametrized Gaussian noise component and nonstationary and non-Gaussian noise transients. Both the signal model and noise model employ trans-dimensional sampling, with the complexity of the model adapting to the requirements of the data. The flexibility of the algorithm makes it suitable for a variety of analyses, including reconstructing generic unmodeled signals; cross-checks against modeled analyses for compact binaries; as well as separating coherent signals from incoherent instrumental noise transients (glitches). The BayesWave model has been extended to account for gravitational wave signals with generic polarization content and the simultaneous presence of signals and glitches in the data. We describe updates in the BayesWave prior distributions, sampling proposals, and burn-in stage that provide significantly improved sampling efficiency. We present standard review checks indicating the robustness and convergence of the BayesWave trans-dimensional sampler. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
24700010
Volume :
103
Issue :
4
Database :
Academic Search Index
Journal :
Physical Review D: Particles, Fields, Gravitation & Cosmology
Publication Type :
Periodical
Accession number :
149082580
Full Text :
https://doi.org/10.1103/PhysRevD.103.044006