Searches for continuous gravitational waves from 15 supernova remnants and fomalhaut b with Advanced LIGO

LIGO Scientific Collaboration and Virgo Collaboration, Philip Charlton

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Abstract

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 × 10−25, fiducial neutron star ellipticity as strict as 2 × 10−9, and fiducial r-mode amplitude as strict as 3 × 10−8.
Original languageEnglish
Article number122
Pages (from-to)1-21
Number of pages21
JournalThe Astrophysical Journal: an international review of astronomy and astronomical physics
Volume875
Issue number2
Early online date08 Jan 2019
DOIs
Publication statusPublished - 23 Apr 2019

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