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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. https://resolver.caltech.edu/CaltechAUTHORS:20170208-080512331

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Abstract

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
https://doi.org/10.1103/PhysRevD.95.042001DOIArticle
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.042001PublisherArticle
https://arxiv.org/abs/1604.04324arXivDiscussion Paper
ORCID:
AuthorORCID
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.
Group:LIGO
Funders:
Funding AgencyGrant Number
Pennsylvania State UniversityUNSPECIFIED
NSFPHY-0757058
NSFPHY-0923409
NSFPHY-1104371
NSFPHY-1454389
NSFPHY-1607585
NSFPHY-1307429
Japan Society for the Promotion of Science (JSPS)16H06714
Other Numbering System:
Other Numbering System NameOther Numbering System ID
LIGO DocumentP1600009
Issue or Number:4
Record Number:CaltechAUTHORS:20170208-080512331
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170208-080512331
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74145
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Feb 2017 16:44
Last Modified:03 Oct 2019 16:35

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