Results of LIGO O2 continuous gravitational waves on arXiv/ADS

Narrow-band search for gravitational waves from known pulsars using the second LIGO observing run
Searches for Gravitational Waves from Known Pulsars at Two Harmonics in 2015-2017 LIGO Data
All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data

The O2 data is now released and publicly available at the GWOSC.