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  Statistical characterization of pulsar glitches and their potential impact on searches for continuous gravitational waves

Ashton, G., Prix, R., & Jones, D. I. (2017). Statistical characterization of pulsar glitches and their potential impact on searches for continuous gravitational waves. Physical Review D, 96: 063004. doi:10.1103/PhysRevD.96.063004.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-46A7-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-E814-2
Genre: Journal Article

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 Creators:
Ashton, Gregory, Author
Prix, Reinhard1, 2, Author              
Jones, David Ian, Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
2Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_2630691              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: Continuous gravitational waves from neutron stars could provide an invaluable resource to learn about their interior physics. A common search method involves matched-filtering a modeled template against the noisy gravitational-wave data to find signals. This method suffers a mismatch (i.e. relative loss of signal-to-noise ratio) if the signal deviates from the template. One possible instance in which this may occur is if the neutron star undergoes a glitch, a sudden rapid increase in the rotation frequency seen in the timing of many radio pulsars. In this work, we use a statistical characterization of glitch rate and size in radio pulsars to estimate how often neutron star glitches would occur within the parameter space of continuous gravitational-wave searches, and how much mismatch putative signals would suffer in the search due to these glitches. We find that for many previous and potential future searches, continuous-wave signals have an elevated probability of undergoing one or more glitches, and that these glitches will often lead to a substantial fraction of the signal-to-noise ratio being lost. This could lead to a failure to identify candidate gravitational wave signals in the initial stages of a search, and also to the false dismissal of candidates in subsequent follow-up stages.

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 Dates: 2017-04-032017
 Publication Status: Published in print
 Pages: 22 pages, 9 figures
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1704.00742
URI: http://arxiv.org/abs/1704.00742
DOI: 10.1103/PhysRevD.96.063004
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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: 96 Sequence Number: 063004 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258