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  Fast and Accurate Sensitivity Estimation for Continuous-Gravitational-Wave Searches

Dreißigacker, C., Prix, R., & Wette, K. (2018). Fast and Accurate Sensitivity Estimation for Continuous-Gravitational-Wave Searches. Physical Review D, 98: 084058. doi:10.1103/PhysRevD.98.084058.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-FA25-C Version Permalink: http://hdl.handle.net/21.11116/0000-0002-E9E3-7
Genre: Journal Article

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 Creators:
Dreißigacker, Christoph1, Author              
Prix, Reinhard2, Author              
Wette, Karl2, Author              
Affiliations:
1Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_2630691              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: This paper presents an efficient numerical sensitivity-estimation method and implementation for continuous-gravitational-wave searches, extending and generalizing an earlier analytic approach by Wette [1]. This estimation framework applies to a broad class of F-statistic-based search meth- ods, namely (i) semi-coherent StackSlide F-statistic (single-stage and hierarchical multi-stage), (ii) Hough number count on F-statistics, as well as (iii) Bayesian upper limits on (coherent or semi-coherent) F-statistic search results. We test this estimate against results from Monte-Carlo simulations assuming Gaussian noise. We find the agreement to be within a few % at high (i.e. low false-alarm) detection thresholds, with increasing deviations at decreasing (i.e. higher false- alarm) detection thresholds, which can be understood in terms of the approximations used in the estimate. We also provide an extensive summary of sensitivity depths achieved in past continuous- gravitational-wave searches (derived from the published upper limits). For the F-statistic-based searches where our sensitivity estimate is applicable, we find an average relative deviation to the published upper limits of less than 10%, which in most cases includes systematic uncertainty about the noise-floor estimate used in the published upper limits.

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 Dates: 2018-08-072018
 Publication Status: Published in print
 Pages: (31 pages, 11 figures, 5 tables)
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 Rev. Method: -
 Identifiers: arXiv: 1808.02459
URI: http://arxiv.org/abs/1808.02459
DOI: 10.1103/PhysRevD.98.084058
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 98 Sequence Number: 084058 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258