Search for continuous gravitational waves from HESS J1427-608 with a hidden Markov model
Date
2022
Authors
Beniwal, D.
Clearwater, P.
Dunn, L.
Strang, L.
Rowell, G.
Melatos, A.
Ottaway, D.
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Advisors
Journal Title
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Volume Title
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Journal article
Citation
Physical Review D (particles, fields, gravitation, and cosmology), 2022; 106(10):103018-1-103018-15
Statement of Responsibility
Deeksha Beniwal, Patrick Clearwater, Liam Dunn, Lucy Strang, Gavin Rowell, Andrew Melatos, and David Ottaway
Conference Name
Abstract
We present a search for continuous gravitational-wave signals from an unidentified pulsar potentially poweringHESS J1427-608, a spatially unresolvedTeVpoint source detected by the HighEnergy Stereoscopic System (HESS). The search uses a semicoherent algorithm, which combines the maximum likelihood F statistic with a hidden Markov model to efficiently detect and track quasimonochromatic signals that wander randomly in frequency. It uses data from the second observing run of the Advanced Laser Interferometer Gravitational-Wave Observatory. Multiwavelength observations of the HESS source are combined with the proprieties of the population of TeV-bright pulsar wind nebulae to constrain the search parameters.We find no evidence of gravitational-wave emission from this target.We set upper limits on the characteristic wave strain h95% 0 (for circularly polarized signals) at95%confidence level in sample subbands and interpolate it to estimate the sensitivity in the full band. We find h95% 0 ¼ 1.3 × 10−25 near 185 Hz. The implied constraints on the ellipticity and r-mode amplitude reach ϵ ≤ 10−5 and α ≤ 10−3 at 200 Hz, respectively.
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Dissertation Note
Provenance
Description
Published 15 November 2022
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© 2022 American Physical Society