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

Authors

B. P. Abbott
R. AbbottFollow
T. D. AbbottFollow
F. Acernese
K. Ackley
Teviet Creighton, The University of Texas Rio Grande ValleyFollow
Mario C. Diaz, The University of Texas Rio Grande ValleyFollow
Soma Mukherjee, The University of Texas Rio Grande ValleyFollow
Volker Quetschke, The University of Texas Rio Grande ValleyFollow
Malik Rakhmanov, The University of Texas Rio Grande ValleyFollow

Document Type

Article

Publication Date

6-15-2017

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.

Comments

© Physical Review D. Original version available at: http://doi.org/10.1103/PhysRevD.95.122003

Recommended Citation

Abbott, Benjamin P., Rich Abbott, Thomas D. Abbott, Fausto Acernese, Kendall Ackley, Carl Adams, Thomas Adams et al. "Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model." Physical Review D 95, no. 12 (2017): 122003. http://doi.org/10.1103/PhysRevD.95.122003

Publication Title

Physical Review D

DOI

10.1103/PhysRevD.95.122003