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  Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves

Pletsch, H. J., & Allen, B. (2009). Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves. Physical Review Letters, 103: 181102. doi:10.1103/PhysRevLett.103.181102.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-469C-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-469D-0
Genre: Journal Article

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PhysRevLett.103.181102.pdf (Publisher version), 228KB
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 Creators:
Pletsch, Holger J.1, Author              
Allen, Bruce1, Author              
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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 Abstract: Fully coherent searches (over realistic ranges of parameter space and year-long observation times) for unknown sources of continuous gravitational waves are computationally prohibitive. Less expensive hierarchical searches divide the data into shorter segments which are analyzed coherently, then detection statistics from different segments are combined incoherently. The novel method presented here solves the long-standing problem of how best to do the incoherent combination. The optimal solution exploits large-scale parameter-space correlations in the coherent detection statistic. Application to simulated data shows dramatic sensitivity improvements compared with previously available (ad hoc) methods, increasing the spatial volume probed by more than 2 orders of magnitude at lower computational cost.

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 Dates: 2009
 Publication Status: Published in print
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 Identifiers: eDoc: 438199
DOI: 10.1103/PhysRevLett.103.181102
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 103 Sequence Number: 181102 Start / End Page: - Identifier: -