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 language | English |
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Article number | 122 |
Number of pages | 15 |
Journal | Astrophysical Journal |
Volume | 875 |
Issue number | 2 |
DOIs | |
Publication status | Published - 20 Apr 2019 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019. The American Astronomical Society. All rights reserved.
Keywords
- gravitational waves
- ISM: supernova remnants
- stars: neutron