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Analysis framework for the prompt discovery of compact binary mergers in gravitational-wave data

Messick, Cody and Blackburn, Kent and Sachdev, Surabhi and Weinstein, Alan (2017) Analysis framework for the prompt discovery of compact binary mergers in gravitational-wave data. Physical Review D, 95 (4). Art. No. 042001. ISSN 2470-0010. doi:10.1103/PhysRevD.95.042001.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Messick, Cody0000-0002-8230-3309
Sachdev, Surabhi0000-0002-2432-7070
Weinstein, Alan0000-0002-0928-6784
Additional Information:© 2017 American Physical Society. Received 14 June 2016; published 7 February 2017. The authors wish to thank B. Sathyaprakash, the LIGO Scientific Collaboration, and the Compact Binary Coalescence working group for many useful discussions. We gratefully acknowledge the support of the Eberly Research Funds of Penn State and the National Science Foundation through Grants No. PHY-0757058, No. PHY-0923409, No. PHY-1104371, No. PHY-1454389, No. PHY-1607585, and No. PHY-1307429. K. C. was supported in part by JSPS KAKENHI Grant No. 16H06714. This document has LIGO Document No. P1600009.
Funding AgencyGrant Number
Pennsylvania State UniversityUNSPECIFIED
Japan Society for the Promotion of Science (JSPS)16H06714
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Other Numbering System NameOther Numbering System ID
LIGO DocumentP1600009
Issue or Number:4
Record Number:CaltechAUTHORS:20170208-080512331
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74145
Deposited By: Tony Diaz
Deposited On:08 Feb 2017 16:44
Last Modified:11 Nov 2021 05:25

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