TY - JOUR T1 - Searches for gravitational waves from known pulsars at two harmonics in 2015-2017 LIGO data JO - Astrophysical Journal UR - https://eprints.whiterose.ac.uk/id/eprint/158305 PY - 2019/06/26 AU - Abbott BP AU - Abbott R AU - Abbott TD AU - Abraham S AU - Acernese F AU - Ackley K AU - Adams C AU - Adhikari RX AU - Adya VB AU - Affeldt C AU - Agathos M et al ED - DO - DOI: 10.3847/1538-4357/ab20cb PB - IOP Publishing, for the American Astronomical Society VL - 879 IS - 1 Y2 - 2025/11/23 ER -