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

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posted on 2023-05-21, 11:24 authored by Abbott, BP, Abbott, R, Karelle SiellezKarelle Siellez, Zweizig, J, Suvorova, S, Moran, W, Evans, RJ
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 60–650 Hz. Frequentist 95% confidence strain upper limits, h95%0 = 4.0 x 10−25, 8.3 x 10−25, and 3.0 x 10−25 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 106 Hz.

History

Publication title

Physical Review D: covering particles, fields, gravitation, and cosmology

Volume

95

Issue

12

Article number

122003

Number

122003

Pagination

1-20

ISSN

2470-0010

Department/School

School of Natural Sciences

Publisher

American Physical Society

Place of publication

United States

Rights 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.

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Expanding knowledge in the physical sciences

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