期刊
CLASSICAL AND QUANTUM GRAVITY
卷 37, 期 21, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6382/abac6c
关键词
gravitational waves; interferometric noise; matched-filter search; non-stationarity
类别
资金
- US National Science Foundation
- French Centre National de Recherche Scientifique (CNRS)
- Italian Istituto Nazionale della Fisica Nucleare (INFN)
- Dutch Nikhef
- Polish institute
- Hungarian institute
- National Science Foundation [PHY-0757058, PHY-0823459]
- STFC
- STFC [ST/S000550/1, ST/T000325/1] Funding Source: UKRI
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 5% improvement in the sensitivity volume for low mass binaries, particularly binary neutron stars mergers.
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