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Enhancing confidence in the detection of gravitational waves from compact binaries using signal coherence

Isi, Maximiliano and Smith, Rory and Vitale, Salvatore and Massinger, T. J. and Kanner, Jonah and Vajpeyi, Avi (2018) Enhancing confidence in the detection of gravitational waves from compact binaries using signal coherence. Physical Review D, 98 (4). Art. No. 042007. ISSN 2470-0010. doi:10.1103/physrevd.98.042007.

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We show that gravitational-wave signals from compact binary mergers may be better distinguished from instrumental noise transients by using Bayesian models that look for signal coherence across a detector network. This can be achieved even when the signal power is below the usual threshold for detection. This method could reject the vast majority of noise transients, and therefore increase sensitivity to weak gravitational waves. We demonstrate this using simulated signals, as well as data for GW150914 and LVT151012. Finally, we explore ways of incorporating our method into existing Advanced LIGO and Virgo searches to make them significantly more powerful.

Item Type:Article
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URLURL TypeDescription
Isi, Maximiliano0000-0001-8830-8672
Massinger, T. J.0000-0002-3429-5025
Kanner, Jonah0000-0001-8115-0577
Additional Information:© 2018 American Physical Society. (Received 27 March 2018; published 27 August 2018) We thank Alan Weinstein, Alex Nitz, Carl-Johan Haster, Stefan Hild, Reed Essick, Ryan Lynch, Colm Talbot, Eric Thrane, John Veitch, and Thomas Dent for helpful comments. Rory Smith is supported by the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), through Project No. CE170100004. The authors thank the LIGO Scientific Collaboration for access to the data and gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO Grant No. PHY-0757058, as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, and the Max-Planck-Society (MPS) for support of the construction of Advanced LIGO. Additional support for Advanced LIGO was provided by the Australian Research Council. This manuscript has LIGO Document ID LIGO-P1700414.
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Australian Research CouncilCE170100004
Science and Technology Facilities Council (STFC)UNSPECIFIED
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Other Numbering System NameOther Numbering System ID
LIGO DocumentP1700414
Issue or Number:4
Record Number:CaltechAUTHORS:20180827-094620996
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89154
Deposited By: George Porter
Deposited On:27 Aug 2018 20:14
Last Modified:16 Nov 2021 00:33

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