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Analysis Framework for the Prompt Discovery of Compact Binary Mergers in Gravitational-wave Data
Physical Review D (2017)
  • Cody Messick
  • Kent Blackburn, California Institute of Technology
  • Patrick Brady, University of Wisconsin–Milwaukee
  • Patrick Brockill, Community College of Philadelphia
  • Kipp Cannon, University of Toronto
  • Romain Cariou, École normale supérieure de Cachan
  • Sarah Caudill
  • Sydney J. Chamberlin, Pennsylvania State University
  • Jolien D. E. Creighton, University of Wisconsin–Milwaukee
  • Ryan Everett
  • Chad Hanna, Pennsylvania State University
  • Drew Keppel, Max Planck Society
  • Ryan N. Lang
  • Tjonnie G. F. Li, California Institute of Technology
  • Duncan Meacher, American Enterprise Institute
  • Alex Nielsen, University of Canterbury
  • Chris Pankow, Northwestern University
  • Stephen Privitera, Max Planck Society
  • Hong Qi
  • Surabhi Sachdev
  • Laleh Sadeghian, Washington University in St. Louis
  • Leo Singer, Goddard Space Flight Center
  • E. Gareth Thomas
  • Leslie Wade, Kenyon College
  • Madeline Wade, Kenyon College
  • Alan Weinstein, California Institute of Technology
  • Karsten Wiesner, Max Planck Society
We describe a stream-based analysis pipeline to detect gravitational waves from the merger of binary neutron stars, binary black holes, and neutron-star–black-hole binaries within ∼1 min of the arrival of the merger signal at Earth. Such low-latency detection is crucial for the prompt response by electromagnetic facilities in order to observe any fading electromagnetic counterparts that might be produced by mergers involving at least one neutron star. Even for systems expected not to produce counterparts, low-latency analysis of the data is useful for deciding when not to point telescopes, and as feedback to observatory operations. Analysts using this pipeline were the first to identify GW151226, the second gravitational-wave event ever detected. The pipeline also operates in an offline mode, in which it incorporates more refined information about data quality and employs acausal methods that are inapplicable to the online mode. The pipeline’s offline mode was used in the detection of the first two gravitational-wave events, GW150914 and GW151226, as well as the identification of a third candidate, LVT151012.
Publication Date
February 7, 2017
Citation Information
Cody Messick, Kent Blackburn, Patrick Brady, Patrick Brockill, et al.. "Analysis Framework for the Prompt Discovery of Compact Binary Mergers in Gravitational-wave Data" Physical Review D Vol. 95 Iss. 4 (2017) p. 42001
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