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Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model

Citation

Abbott, BP and Abbott, R and Siellez, K and Zweizig, J and Suvorova, S and Moran, W and Evans, RJ, LIGO Scientific Collaboration and Virgo Collaboration, Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model, Physical Review D: covering particles, fields, gravitation, and cosmology, 95, (12) Article 122003. ISSN 2470-0010 (2017) [Refereed Article]


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Copyright Statement

2017 American Physical Society. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. Must link to published article.

DOI: doi:10.1103/PhysRevD.95.122003

Abstract

Results are presented from a semicoherent search for continuous gravitational waves from the brightest low-mass X-ray binary, Scorpius X-1, using data collected during the first Advanced LIGO observing run. The search combines a frequency domain matched filter (Bessel-weighted F-statistic) with a hidden Markov model to track wandering of the neutron star spin frequency. No evidence of gravitational waves is found in the frequency range 60650Hz. Frequentist 95% confidence strain upper limits, h95%0=4.0x10−25, 8.3x10−25, and 3.0x10−25 for electromagnetically restricted source orientation, unknown polarization, and circular polarization, respectively, are reported at 106 Hz. They are ≤10 times higher than the theoretical torque-balance limit at 106Hz.

Item Details

Item Type:Refereed Article
Keywords:gravitational waves, Scorpius X-1, Markov model, neutron star
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:General relativity and gravitational waves
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Siellez, K (Dr Karelle Siellez)
ID Code:152067
Year Published:2017
Web of Science® Times Cited:44
Deposited By:Physics
Deposited On:2022-08-10
Last Modified:2022-09-26
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