Faster search for long gravitational-wave transients: GPU implementation of the transient F-statistic

Keitel, D. and Ashton, G. (2018) Faster search for long gravitational-wave transients: GPU implementation of the transient F-statistic. Classical and Quantum Gravity, 35(20), 205003. (doi: 10.1088/1361-6382/aade34)

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The -statistic is an established method to search for continuous gravitational waves from spinning neutron stars. Prix et al (2011 Phys. Rev. D 84 023007) introduced a variant for transient, hours–months long, quasi-monochromatic signals. Possible astrophysical scenarios for such transients include glitching pulsars, newborn neutron stars and accreting systems. Here we present a new implementation of the transient -statistic, using to leverage the power of modern graphics processing units (GPUs). The obtained speedup allows efficient searches over much wider parameter spaces, especially when using more realistic transient signal models including time-varying (e.g. exponentially decaying) amplitudes. Hence, it can enable comprehensive coverage of glitches in known nearby pulsars, improve the follow-up of outliers from continuous-wave searches, and might be an important ingredient for future blind all-sky searches for unknown neutron stars.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Keitel, David
Authors: Keitel, D., and Ashton, G.
Subjects:Q Science > QB Astronomy
Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Institute for Gravitational Research
Journal Name:Classical and Quantum Gravity
Journal Abbr.:CQG
Publisher:IOP Publishing
ISSN (Online):1361-6382
Published Online:31 August 2018
Copyright Holders:Copyright © 2018 IOP Publishing Ltd
First Published:First published in Classical and Quantum Gravity 35:205003
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
684501GRANITEGraham WoanEuropean Commission (EC)704094S&E P&A - PHYSICS & ASTRONOMY