
Physics and Astronomy Faculty Publications and Presentations
Document Type
Article
Publication Date
12-28-2016
Abstract
We report results of an all-sky search for periodic gravitational waves with frequency between 50 and 510 Hz from isolated compact objects, e.g., neutron stars. A new hierarchical multistage approach is taken, supported by the computing power of the Einstein@Home project, allowing us to probe more deeply than ever before. 16 million subthreshold candidates from the initial search [LIGO Scientific and Virgo Collaborations, Phys. Rev. D 94, 102002 (2016)] are followed up in four stages. None of those candidates is consistent with an isolated gravitational wave emitter, and 90% confidence level upper limits are placed on the amplitudes of continuous waves from the target population. Between 170.5 and 171 Hz, we set the most constraining 90% confidence upper limit on the strain amplitude ℎ0 at 4.3×10−25, while at the high end of our frequency range, we achieve an upper limit of 7.6×10−25. These are the most constraining all-sky upper limits to date and constrain the ellipticity of rotating compact objects emitting at 300 Hz at a distance 𝐷 to less than 6×10−7 [𝐷100 pc].
Recommended Citation
Papa, Maria Alessandra, Heinz-Bernd Eggenstein, Sinéad Walsh, Irene Di Palma, Bruce Allen, Pia Astone, Oliver Bock et al. "Hierarchical follow-up of subthreshold candidates of an all-sky Einstein@ Home search for continuous gravitational waves on LIGO sixth science run data." Physical Review D 94, no. 12 (2016): 122006. https://doi.org/10.1103/PhysRevD.94.122006
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Publication Title
Physical Review D
DOI
https://doi.org/10.1103/PhysRevD.94.122006
Comments
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.