Abstract
We report on an all-sky search for periodic gravitational waves in the frequency band 20–475 Hz and with a frequency time derivative in the range of . 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 LIGO’s 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 are near 170 Hz. For a circularly polarized source (most favorable orientation), the smallest upper limits obtained are . 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 .
16 More- Received 10 July 2017
DOI:https://doi.org/10.1103/PhysRevD.96.062002
© 2017 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
Searching for Neutron Star Gravitational Waves
Published 12 September 2017
The first run of LIGO and Virgo’s gravitational-wave search shows no evidence of spinning asymmetric neutron stars, but recent upgrades could make the detection possible.
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