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

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

doi:10.1103/PhysRevD.95.122003

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

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

Physics and Astronomy (Twin Cities)

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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.

Original language	English (US)
Journal	Physical Review D
Volume	95
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.95.122003
State	Published - Jun 15 2017

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© 2017 American Physical Society. us.

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Abbott, B. P., Abbott, R., Abbott, T. D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., ... (LIGO Scientific Collaboration and Virgo Collaboration) (2017). Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model. Physical Review D, 95(12). https://doi.org/10.1103/PhysRevD.95.122003

Abbott, BP, Abbott, R, Abbott, TD, Acernese, F, Ackley, K, Adams, C, Adams, T, Addesso, P, Adhikari, RX, Adya, VB, Affeldt, C, Afrough, M, Agarwal, B, Agatsuma, K, Aggarwal, N, Aguiar, OD, Aiello, L, Ain, A, Ajith, P, Allen, B, Allen, G, Allocca, A, Almoubayyed, H, Altin, PA, Amato, A, Ananyeva, A, Anderson, SB, Anderson, WG, Antier, S, Appert, S, Arai, K, Araya, MC, Areeda, JS, Arnaud, N, Arun, KG, Ascenzi, S, Ashton, G, Ast, M, Aston, SM, Astone, P, Aufmuth, P, Aulbert, C, Aultoneal, K, Avila-Alvarez, A, Babak, S, Bacon, P, Bader, MKM, Bae, S, Mandic, V, Matas, A & (LIGO Scientific Collaboration and Virgo Collaboration) 2017, 'Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model', Physical Review D, vol. 95, no. 12. https://doi.org/10.1103/PhysRevD.95.122003

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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 = "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 V. Mandic and A. Matas and {(LIGO Scientific Collaboration and Virgo Collaboration)}",

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T1 - Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model

AU - Abbott, B. P.

AU - Abbott, R.

AU - Abbott, T. D.

AU - Acernese, F.

AU - Ackley, K.

AU - Adams, C.

AU - Adams, T.

AU - Addesso, P.

AU - Adhikari, R. X.

AU - Adya, V. B.

AU - Affeldt, C.

AU - Afrough, M.

AU - Agarwal, B.

AU - Agatsuma, K.

AU - Aggarwal, N.

AU - Aguiar, O. D.

AU - Aiello, L.

AU - Ain, A.

AU - Ajith, P.

AU - Allen, B.

AU - Allen, G.

AU - Allocca, A.

AU - Almoubayyed, H.

AU - Altin, P. A.

AU - Amato, A.

AU - Ananyeva, A.

AU - Anderson, S. B.

AU - Anderson, W. G.

AU - Antier, S.

AU - Appert, S.

AU - Arai, K.

AU - Araya, M. C.

AU - Areeda, J. S.

AU - Arnaud, N.

AU - Arun, K. G.

AU - Ascenzi, S.

AU - Ashton, G.

AU - Ast, M.

AU - Aston, S. M.

AU - Astone, P.

AU - Aufmuth, P.

AU - Aulbert, C.

AU - Aultoneal, K.

AU - Avila-Alvarez, A.

AU - Babak, S.

AU - Bacon, P.

AU - Bader, M. K.M.

AU - Bae, S.

AU - Mandic, V.

AU - Matas, A.

AU - (LIGO Scientific Collaboration and Virgo Collaboration)

PY - 2017/6/15

Y1 - 2017/6/15

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevD.95.122003

DO - 10.1103/PhysRevD.95.122003

M3 - Article

AN - SCOPUS:85022327286

SN - 2470-0010

VL - 95

JO - Physical Review D

JF - Physical Review D

IS - 12

ER -

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

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