@article{fca46c02bf844d8f94dd883685539e80,

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, h095%=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.",

author = "{(LIGO Scientific Collaboration and Virgo Collaboration)} and Abbott, {B. P.} and R. Abbott and Abbott, {T. D.} and F. Acernese and K. Ackley and C. Adams and T. Adams and P. Addesso and Adhikari, {R. X.} and Adya, {V. B.} and C. Affeldt and M. Afrough and B. Agarwal and K. Agatsuma and N. Aggarwal and Aguiar, {O. D.} and L. Aiello and A. Ain and P. Ajith and B. Allen and G. Allen and A. Allocca and H. Almoubayyed and Altin, {P. A.} and A. Amato and A. Ananyeva and Anderson, {S. B.} and Anderson, {W. G.} and S. Antier and S. Appert and K. Arai and Araya, {M. C.} and Areeda, {J. S.} and N. Arnaud and Arun, {K. G.} and S. Ascenzi and G. Ashton and M. Ast and Aston, {S. M.} and P. Astone and P. Aufmuth and C. Aulbert and K. Aultoneal and A. Avila-Alvarez and S. Babak and P. Bacon and Bader, {M. K.M.} and S. Bae and F. Barone and B. Barr",

year = "2017",

month = jun,

day = "15",

doi = "10.1103/PhysRevD.95.122003",

language = "English (US)",

volume = "95",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "12",

}