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

Date

2017

Authors

Abbott, B P
Abbott, R
Abbott, T D
Acernese, Fausto
Ackley, K
Adams, C
Adams, T
Addesso, P
Adhikari, Rana X
Adya, V

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

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 60–650 Hz. Frequentist 95% confidence strain upper limits, h95% 0 ¼ 4.0 × 10−25, 8.3 × 10−25, and 3.0 × 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.

Description

Keywords

Citation

Source

Physical Review D

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1103/PhysRevD.95.122003

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