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

Abstract : Results are presented from a semi-coherent 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 (O1). 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=4.0×10−25, 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.
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http://hal.in2p3.fr/in2p3-01507420
Contributor : Claudine Bombar <>
Submitted on : Thursday, April 13, 2017 - 10:21:14 AM
Last modification on : Tuesday, October 22, 2019 - 12:10:12 PM

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  • HAL Id : in2p3-01507420, version 1
  • ARXIV : 1704.03719

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B.P. Abbott, T. Adams, R. Bonnand, D. Buskulic, M. Ducrot, et al.. Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model. 2017. ⟨in2p3-01507420⟩

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