Davies, G. S., Pitkin, M. and Woan, G. (2016) A targeted spectral interpolation algorithm for the detection of continuous gravitational waves. Classical and Quantum Gravity, 34(1), 015010. (doi: 10.1088/1361-6382/34/1/015010)
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Abstract
We present an improved method of targeting continuous gravitationalwave signals in data from the LIGO and Virgo detectors with a higher efficiency than the time-domain Bayesian pipeline used in many previous searches. Our spectral interpolation algorithm, SplInter, removes the intrinsic phase evolution of the signal from source rotation and relative detector motion. We do this in the frequency domain and generate a time series containing only variations in the signal due to the antenna pattern. Although less flexible than the classic heterodyne approach, SplInter allows for rapid analysis of putative signals from isolated (and some binary) pulsars, and efficient follow-up searches for candidate signals generated by other search methods. The computational saving over the heterodyne approach can be many orders of magnitude, up to a factor of around fifty thousand in some cases, with a minimal impact on overall sensitivity for most targets.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Woan, Professor Graham and Pitkin, Dr Matthew |
Authors: | Davies, G. S., Pitkin, M., and Woan, G. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
Journal Name: | Classical and Quantum Gravity |
Publisher: | Institute of Physics |
ISSN: | 0264-9381 |
ISSN (Online): | 1361-6382 |
Copyright Holders: | Copyright © 2016 IOP Publishing Ltd |
First Published: | First published in Classical and Quantum Gravity 34(1): 015010 |
Publisher Policy: | Reproduced under a Creative Commons License |
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