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The GstLAL Search Analysis Methods for Compact Binary Mergers in Advanced LIGO's Second and Advanced Virgo's First Observing Runs

Sachdev, Surabhi and Caudill, Sarah and Fong, Heather and Lo, Rico K. L. and Messick, Cody and Mukherjee, Debnandini and Magee, Ryan and Tsukada, Leo and Blackburn, Kent and Brady, Patrick and Brockill, Patrick and Cannon, Kipp and Chamberlin, Sydney J. and Chatterjee, Deep and Creighton, Jolien D. E. and Godwin, Patrick and Gupta, Anuradha and Hanna, Chad and Kapadia, Shasvath and Lang, Ryan N. and Li, Tjonnie G. F. and Meacher, Duncan and Pace, Alexander and Privitera, Stephen and Sadeghian, Laleh and Wade, Leslie and Wade, Madeline and Weinstein, Alan and Xiao, Sophia Liting (2019) The GstLAL Search Analysis Methods for Compact Binary Mergers in Advanced LIGO's Second and Advanced Virgo's First Observing Runs. . (Unpublished)

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After their successful first observing run (September 12, 2015 - January 12, 2016), the Advanced LIGO detectors were upgraded to increase their sensitivity for the second observing run (November 30, 2016 - August 26, 2017). The Advanced Virgo detector joined the second observing run on August 1, 2017. We discuss the updates that happened during this period in the GstLAL-based inspiral pipeline, which is used to detect gravitational waves from the coalescence of compact binaries both in low latency and an offline configuration. These updates include deployment of a zero-latency whitening filter to reduce the over-all latency of the pipeline by up to 32 seconds, incorporation of the Virgo data stream in the analysis, introduction of a single-detector search to analyze data from the periods when only one of the detectors is running, addition of new parameters to the likelihood ratio ranking statistic, increase in the parameter space of the search, and introduction of a template mass-dependent glitch-excision thresholding method.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Sachdev, Surabhi0000-0002-2432-7070
Blackburn, Kent0000-0002-3838-2986
Weinstein, Alan0000-0002-0928-6784
Xiao, Sophia Liting0000-0003-2703-449X
Additional Information:LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation (NSF) and operates under cooperative agreement PHY-0757058. We would like to thank Tito Dal Canton for provinding helpful comments and suggestions. We would also like to thank Graham Woan for his help in the review of the O2 pipeline. SS was supported in part by the LIGO Laboratory and in part by the Eberly Research Funds of Penn State, The Pennsylvania State University, University Park, PA 16802, USA. DM, JC, PB, and DC were supported by the the NSF grant PHY-1607585. SC was supported by the research programme of the Netherlands Organisation for Scientific Research (NWO). HF was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). CH was supported in part by the NSF through PHY-1454389. Funding for this project was provided by the Charles E. Kaufman Foundation of The Pittsburgh Foundation. TGFL was partially supported by a grant from the Research Grants Council of the Hong Kong (Project No. CUHK 14310816 and CUHK 24304317) and the Direct Grant for Research from the Research Committee of the Chinese University of Hong Kong. AG acknowledges support from NSF Grants AST-1716394 and AST-1708146. MW was supported by NSF grant PHY-1607178. This paper carries LIGO Document Number ligo-p1700411.
Funding AgencyGrant Number
Pennsylvania State UniversityUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Charles E. Kaufman FoundationUNSPECIFIED
Pittsburgh FoundationUNSPECIFIED
Research Grants Council of Hong KongCUHK 14310816
Research Grants Council of Hong KongCUHK 24304317
Chinese University of Hong KongUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
LIGO DocumentP1700411
Record Number:CaltechAUTHORS:20190501-135953792
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95141
Deposited By: George Porter
Deposited On:01 May 2019 22:17
Last Modified:09 Mar 2020 13:19

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