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Implementation of barycentric resampling for continuous wave searches in gravitational wave data

Patel, Pinkesh and Siemens, Xavier and Dupuis, Rejean and Betzwieser, Joseph (2010) Implementation of barycentric resampling for continuous wave searches in gravitational wave data. Physical Review D, 81 (8). Art. No. 084032. ISSN 2470-0010.

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We describe an efficient implementation of a coherent statistic for searches of continuous gravitational wave from neutron stars. The algorithm works by transforming the data taken by a gravitational wave detector from a moving Earth bound frame to one that sits at the Solar System barycenter. Many practical difficulties arise in the implementation of this algorithm, some of which have not been discussed previously. These difficulties include constraints of small computer memory, discreteness of the data, losses due to interpolation, and gaps in real data. This implementation is considerably more efficient than previous implementations of these kinds of searches on Laser Interferometer Gravitational Wave (LIGO) detector data. The speed-up factors range from 10, when applied to Einstein@Home, to about 2000 for targeted searches which integrate over months of data.

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Additional Information:© 2010 The American Physical Society. Received 27 January 2010; revised manuscript received 22 March 2010; published 19 April 2010. We would like to thank the membership of the LIGO Virgo Collaboration’s continuous waves group, especially Stefano Braccini, Vladimir Dergachev, Greg Mendell, Chris Messenger, Maria Alessandra Papa, and Reinhard Prix for helpful discussions.We are also grateful to Patrick Brady and Alan Weinstein for useful conversations. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement No. PHY-0757058. This paper has LIGO Document No. LIGO-P0900301-v1. Xavier Siemens is supported in part by NSF Grant No. PHY- 0758155 and the Research Growth Initiative at the University of Wisconsin—Milwaukee.
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Research Growth Initiative at the University of Wisconsin-MilwaukeeUNSPECIFIED
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Issue or Number:8
Classification Code:PACS: 04.30.Db.
Record Number:CaltechAUTHORS:20100528-093410732
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18493
Deposited By: Tony Diaz
Deposited On:01 Jun 2010 02:12
Last Modified:03 Oct 2019 01:43

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