@article{d14e34faf7a24b3388d6f90dc220fffb,
title = "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 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, h(0)(95%) = 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.",
keywords = "X-RAY BINARIES, NEUTRON-STARS, RADIATION, EMISSION, BOUNDS, NOISE",
author = "B.P. Abbott and R. Abbott and D. Abbott and F. Acernese and K. Ackley and C. Adams and T. Adams and P. Addesso and R.X. Adhikari and V.B. Adya and C. Affeldt and M. Afrough and B. Agarwal and K. Agatsuma and N. Aggarwal and O.D. Aguiar and L. Aiello and A. Ain and P. Ajith and B. Allen and G. Allen and A. Allocca and H. Almoubayyed and P.A. Altin and A. Amato and A. Ananyeva and S.B. Anderson and W.G. Anderson and S. Antier and S. Appert and K. Arai and M.C. Araya and J.S. Areeda and N. Arnaud and K.G. Arun and S. Ascenzi and G. Ashton and M. Ast and S.M. Aston and P. Astone and P. Aufmuth and C. Aulbert and K. AultONeal and A. Avila-Alvarez and S.L. Danilishin and J. Hennig and S. Hild and J. Steinlechner and S. Steinlechner and {van den Brand}, J.F.J. and {LIGO Scientific Collaboration} and {Virgo Collaboration}",
year = "2017",
month = jun,
day = "27",
doi = "10.1103/PhysRevD.95.122003",
language = "English",
volume = "95",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "12",
}