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  Coherent Line Removal: Filtering out harmonically related line interference from experimental data, with application to gravitational wave detectors

Sintes, A. M., & Schutz, B. F. (1998). Coherent Line Removal: Filtering out harmonically related line interference from experimental data, with application to gravitational wave detectors. Physical Review D, 58(12): 122003. doi:10.1103/PhysRevD.58.122003.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-736F-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-7372-3
Genre: Journal Article

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Sintes, Alicia M.1, Author              
Schutz, Bernard F.1, Author              
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1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24013              

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 Abstract: We describe a new technique for removing troublesome interference from external coherent signals present in the gravitational wave spectrum. The method works when the interference is present in many harmonics, as long as they remain coherent with one another. The method can remove interference even when the frequency changes. We apply the method to the data produced by the Glasgow laser interferometer in 1996 and the entire series of wide lines corresponding to the electricity supply frequency and its harmonics are removed, leaving the spectrum clean enough to detect possible signals previously masked by them. We also study the effects of the line removal on the statistics of the noise in the time domain. We find that this technique seems to reduce the level of non-Gaussian noise present in the interferometer and therefore, it can raise the sensitivity and duty cycle of the detectors.

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 Dates: 1998-12-15
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: eDoc: 60243
DOI: 10.1103/PhysRevD.58.122003
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 58 (12) Sequence Number: 122003 Start / End Page: - Identifier: ISSN: 1089-4918