Bayesian inference for compact binary coalescences with bilby: validation and application to the first LIGO–Virgo gravitational-wave transient catalogue

Romero-Shaw, I., Talbot, C., Biscoveanu, S., D’Emilio, V., Ashton, G., Berry, C., Coughlin, S., Galaudage, S., Hoy, C., Hübner, M., Phukon, K., Pitkin, M., Rizzo, M., Sarin, N., Smith, R. and Stevenson, S. 2020. Bayesian inference for compact binary coalescences with bilby: validation and application to the first LIGO–Virgo gravitational-wave transient catalogue. Monthly Notices of the Royal Astronomical Society 499 (3) , pp. 3295-3319. 10.1093/mnras/staa2850

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Abstract

Gravitational waves provide a unique tool for observational astronomy. While the first LIGO–Virgo catalogue of gravitational-wave transients (GWTC-1) contains 11 signals from black hole and neutron star binaries, the number of observations is increasing rapidly as detector sensitivity improves. To extract information from the observed signals, it is imperative to have fast, flexible, and scalable inference techniques. In a previous paper, we introduced bilby: a modular and user-friendly Bayesian inference library adapted to address the needs of gravitational-wave inference. In this work, we demonstrate that bilby produces reliable results for simulated gravitational-wave signals from compact binary mergers, and verify that it accurately reproduces results reported for the 11 GWTC-1 signals. Additionally, we provide configuration and output files for all analyses to allow for easy reproduction, modification, and future use. This work establishes that bilby is primed and ready to analyse the rapidly growing population of compact binary coalescence gravitational-wave signals.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Additional Information:	Additional Authors: A. Vajpeyi , M. Arène , K. Athar , S. Banagiri , N. Bose , M. Carney , K. Chatziioannou , J. A. Clark , M. Colleoni , R. Cotesta , B. Edelman , H. Estellés , C. García-Quirós , Abhirup Ghosh , R. Green , C-J. Haster , S. Husa , D. Keitel , A. X. Kim , F. Hernandez-Vivanco , I. Magaña Hernandez , C. Karathanasis , P. D. Lasky , N. De Lillo , M. E. Lower , D. Macleod , M. Mateu-Lucena , A. Miller , M. Millhouse , S. Morisaki , S. H. Oh , S. Ossokine , E. Payne , J. Powell , G. Pratten , M. Pürrer , A. Ramos-Buades , V. Raymond , E. Thrane , J. Veitch , D. Williams , M. J. Williams , L. Xiao.
Publisher:	Oxford University Press
ISSN:	1365-2966
Date of Acceptance:	11 September 2020
Last Modified:	19 Feb 2026 15:00
URI:	https://orca.cardiff.ac.uk/id/eprint/185048

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