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A semicoherent glitch-robust continuous-gravitational-wave search method

A semicoherent glitch-robust continuous-gravitational-wave search method
A semicoherent glitch-robust continuous-gravitational-wave search method

Isolated nonaxisymmetric rotating neutron stars producing continuous-gravitational-wave signals may undergo occasional spin-up events known as glitches. If unmodeled by a search, these glitches can result in continuous wave signals being missed or misidentified as detector artifacts. We outline a semicoherent glitch-robust search method that allows identification of continuous wave signal candidates that contain glitches and inferences about the model parameters. We demonstrate how this can be applied to the follow-up of candidates found by wide-parameter space searches. We find that a Markov chain Monte Carlo method outperforms a grid-based method in speed and accuracy.

2470-0010
1-9
Ashton, Gregory
805bcbfd-ae8a-46b2-8297-f3142c3d0e7e
Prix, R.
96ea3047-4071-44f4-9a9f-e9e331c61421
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160
Ashton, Gregory
805bcbfd-ae8a-46b2-8297-f3142c3d0e7e
Prix, R.
96ea3047-4071-44f4-9a9f-e9e331c61421
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160

Ashton, Gregory, Prix, R. and Jones, David (2018) A semicoherent glitch-robust continuous-gravitational-wave search method. Physical Review D, 98 (6), 1-9. (doi:10.1103/PhysRevD.98.063011).

Record type: Article

Abstract

Isolated nonaxisymmetric rotating neutron stars producing continuous-gravitational-wave signals may undergo occasional spin-up events known as glitches. If unmodeled by a search, these glitches can result in continuous wave signals being missed or misidentified as detector artifacts. We outline a semicoherent glitch-robust search method that allows identification of continuous wave signal candidates that contain glitches and inferences about the model parameters. We demonstrate how this can be applied to the follow-up of candidates found by wide-parameter space searches. We find that a Markov chain Monte Carlo method outperforms a grid-based method in speed and accuracy.

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Phys Rev D. 98.063011 - Version of Record
Available under License Creative Commons Attribution.
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Accepted/In Press date: 8 August 2018
e-pub ahead of print date: 20 September 2018
Published date: 20 September 2018

Identifiers

Local EPrints ID: 425522
URI: https://eprints.soton.ac.uk/id/eprint/425522
ISSN: 2470-0010
PURE UUID: 475bda76-a157-49d1-8338-592093c083c1

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Date deposited: 23 Oct 2018 16:30
Last modified: 13 Mar 2019 17:55

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