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A coincidence null test for Poisson-distributed events
Name
PhysRevD.103.042003.pdf
Size
1.72 MB
Format
Adobe PDF
Checksum (MD5)
fce30698151d62e478ada14adeda6384
Author(s)
Essick, Reed
Mo, Geoffrey
Katsavounidis, Erik
Date Issued
February 5, 2021
Publisher
American Physical Society
Citation
Phys. Rev. D 103, 042003 (2021)
Version
Final published version
Abstract
When transient events are observed with multiple sensors, it is often necessary to establish the significance of coincident events. We derive a universal null test for an arbitrary number of sensors motivated by the archetypal detection problem for independent Poisson-distributed events in gravitational-wave detectors such as LIGO and Virgo. In these detectors, transient events may be witnessed by myriad channels that record interferometric signals and the surrounding physical environment. We apply our null test to a broad set of simulated gravitational-wave events as well as to a real gravitational-wave detection to determine which auxiliary channels do and do not witness real gravitational waves, and therefore which are safe to use when constructing vetoes. We also describe how our approach can be used to study detector artifacts and their origin, as well as to quantify the statistical independence of candidate gravitational-wave signals from noise artifacts observed in auxiliary channels.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.103.042003
