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Published January 15, 2016 | Published + Submitted
Journal Article Open

Leveraging waveform complexity for confident detection of gravitational waves


The recent completion of Advanced LIGO suggests that gravitational waves may soon be directly observed. Past searches for gravitational-wave transients have been impacted by transient noise artifacts, known as glitches, introduced into LIGO data due to instrumental and environmental effects. In this work, we explore how waveform complexity, instead of signal-to-noise ratio, can be used to rank event candidates and distinguish short duration astrophysical signals from glitches. We test this framework using a new hierarchical pipeline that directly compares the Bayesian evidence of explicit signal and glitch models. The hierarchical pipeline is shown to perform well and, in particular, to allow high-confidence detections of a range of waveforms at a realistic signal-to-noise ratio with a two-detector network.

Additional Information

© 2016 American Physical Society. Received 21 September 2015; published 21 January 2016. Thank you to Kent Blackburn, Reed Essick, Tjonnie Li, Joey Shapiro Key, Patricia Schmidt, Tiffany Summerscales, Michele Vallisneri, Salvatore Vitale, Leslie Wade, and Alan Weinstein for helpful conversations about this work. Thanks also to Seth Kimbrell and Francesco Pannarale for contributions to BayesWave development. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement PHY-0757058. T. B. L. acknowledges the support of NSF LIGO grant, award PHY-1307020. This paper carries LIGO Document Number LIGO-P1500137-v7. We are thankful to the National Science Foundation for support under Grants No. PHY 1205512 and No. PHY 1505308. N. J. C. and M.M. appreciate the support of NSF Award No. PHY-1306702.

Attached Files

Submitted - 1509.06423v2.pdf

Published - PhysRevD.93.022002.pdf


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August 20, 2023
August 20, 2023