Fast evaluation of multidetector consistency for real-time gravitational wave searches

Chad Hanna, Sarah Caudill, Cody Messick, Amit Reza, Surabhi Sachdev, Leo Tsukada, Kipp Cannon, Kent Blackburn, Jolien D.E. Creighton, Heather Fong, Patrick Godwin, Shasvath Kapadia, Tjonnie G.F. Li, Ryan Magee, Duncan Meacher, Debnandini Mukherjee, Alex Pace, Stephen Privitera, Rico K.L. Lo, Leslie Wade

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


Gravitational waves searches for compact binary mergers with LIGO and Virgo are presently a two stage process. First, a gravitational wave signal is identified. Then, an exhaustive search over possible signal parameters is performed. It is critical that the identification stage is efficient in order to maximize the number of gravitational wave sources that are identified. Initial identification of gravitational wave signals with LIGO and Virgo happens in real-time which requires that less than one second of computational time must be used for each one second of gravitational wave data collected. In contrast, subsequent parameter estimation may require hundreds of hours of computational time to analyze the same one second of gravitational wave data. The real-time identification requirement necessitates efficient and often approximate methods for signal analysis. We describe one piece of real-time gravitational-wave identification: an efficient method for ascertaining a signal's consistency between multiple gravitational wave detectors suitable for real-time gravitational wave searches for compact binary mergers. This technique was used in analyses of Advanced LIGO's second observing run and Advanced Virgo's first observing run.

Original languageEnglish (US)
Article number022003
JournalPhysical Review D
Issue number2
StatePublished - Jan 28 2020

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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