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Abstract

We report on an all-sky search for periodic gravitational waves in the frequency band 20475 Hz and with a frequency time derivative in the range of [-1.0, +0.1] x 10−8 Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our galaxy. This search uses the data from Advanced LIGOs first observational run, O1. No periodic gravitational wave signals were observed, and upper limits were placed on their strengths. The lowest upper limits on worst-case (linearly polarized) strain amplitude h0 are ∼4 x 10−25 near 170 Hz. For a circularly polarized source (most favorable orientation), the smallest upper limits obtained are ∼1.5 x 10−25. These upper limits refer to all sky locations and the entire range of frequency derivative values. For a population-averaged ensemble of sky locations and stellar orientations, the lowest upper limits obtained for the strain amplitude are ∼2.5 x 10−25.

Item Type:	Article
Authors/Creators:	Abbott, BP and Abbott, R and Siellez, K and Zweizig, J
Keywords:	gravitational waves, LIGO, all-sky search, 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.96.062002
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.
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