Searches for Continuous Gravitational Waves from 15 Supernova Remnants and Fomalhaut b with Advanced LIGO

LHCb Collaboration

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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)1-15
Number of pages15
JournalAstrophysical Journal
Volume875
Issue number2
DOIs
Publication statusPublished - 20 Apr 2019

Funding

FundersFunder number
National Science Foundation
Directorate for Mathematical and Physical Sciences1800333

    Keywords

    • gravitational waves
    • ISM: supernova remnants
    • stars: neutron

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