Searches for Continuous Gravitational Waves from 15 Supernova Remnants and Fomalhaut B with Advanced LIGO
We describe directed searches for continuous gravitational waves (GWs) from 16 well-localized candidate neutron stars, assuming none of the stars has a binary companion. The searches were directed toward 15 supernova remnants and Fomalhaut b, a directly imaged extrasolar planet candidate that has been suggested to be a nearby old neutron star. Each search covered a broad band of frequencies and first and second time derivatives. After coherently integrating spans of data from the first Advanced LIGO observing run of 3.5-53.7 days per search, applying data-based vetoes, and discounting known instrumental artifacts, we found no astrophysical signals. We set upper limits on intrinsic GW strain as strict as 1 x10-25, fiducial neutron star ellipticity as strict as 2 x 10-9, and fiducial r-mode amplitude as strict as 3 x 10-8.
B. P. Abbott et al., "Searches for Continuous Gravitational Waves from 15 Supernova Remnants and Fomalhaut B with Advanced LIGO," Astrophysical Journal, vol. 875, no. 2, Institute of Physics - IOP Publishing, Apr 2019.
The definitive version is available at https://doi.org/10.3847/1538-4357/ab113b
Keywords and Phrases
gravitational waves; ISM: supernova remnants; stars: neutron
International Standard Serial Number (ISSN)
Article - Journal
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