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  Dynamic Normalization for Compact Binary Coalescence Searches in Non-Stationary Noise

Mozzon, S., Nuttall, L. K., Lundgren, A., Kumar, S., Nitz, A. H., & Dent, T. (2020). Dynamic Normalization for Compact Binary Coalescence Searches in Non-Stationary Noise. Classical and Quantum Gravity, Volume 37, Number 21, 37(21): 215014. doi:10.1088/1361-6382/abac6c.

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 Creators:
Mozzon, S.1, Author
Nuttall, L. K., Author
Lundgren, A., Author
Kumar, S.2, Author              
Nitz, A. H.2, Author              
Dent, T.2, Author              
Affiliations:
1University of Portsmouth, Portsmouth, United Kingdom, ou_persistent22              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
 Abstract: The output of gravitational-wave interferometers, such as LIGO and Virgo, can be highly non-stationary. Broadband detector noise can affect the detector sensitivity on the order of tens of seconds. Gravitational-wave transient searches, such as those for colliding black holes, estimate this noise in order to identify gravitational-wave events. During times of non-stationarity we see a higher rate of false events being reported. To accurately separate signal from noise, it is imperative to incorporate the changing detector state into gravitational-wave searches. We develop a new statistic which estimates the variation of the interferometric detector noise. We use this statistic to re-rank candidate events identified during LIGO-Virgo's second observing run by the PyCBC search pipeline. This results in a 7% improvement in the sensitivity volume for low mass binaries, particularly binary neutron stars mergers.

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 Dates: 2020-02-212020
 Publication Status: Published in print
 Pages: 11 pages, 2 figures. Submitted to Classical and Quantum Gravity
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Title: Classical and Quantum Gravity, Volume 37, Number 21
Source Genre: Journal
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Pages: - Volume / Issue: 37 (21) Sequence Number: 215014 Start / End Page: - Identifier: -