Preview

PDF (Published Version) Siellez - Searc...pdf | Download (1MB) | Preview

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 60650 Hz. Frequentist 95% confidence strain upper limits, h95%0 = 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.

Item Type:	Article
Authors/Creators:	Abbott, BP and Abbott, R and Siellez, K and Zweizig, J and Suvorova, S and Moran, W and Evans, RJ
Keywords:	gravitational waves, Scorpius X-1, Markov model, neutron star
Journal or Publication Title:	Physical Review D: covering particles, fields, gravitation, and cosmology
Publisher:	American Physical Society
ISSN:	2470-0010
DOI / ID Number:	https://doi.org/10.1103/PhysRevD.95.122003
Copyright Information:	© 2017 American Physical Society. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. Must link to published article.
Item Statistics:	View statistics for this item

Actions (login required)

Item Control Page