LIGO-Virgo-KAGRA O3 CW works in 2021

2021 was rather busy for the continuous gravitational waves (CW) LVK working group.

We have searched for GWs from known neutron stars:

• Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs
• Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run

emission from sources located in supernova remnants:

• Search of the Early O3 LIGO Data for Continuous Gravitational Waves from the Cassiopeia A and Vela Jr. Supernova Remnants

unknown sources located anywhere in the sky:

• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data

and sources related to dark matter and scalar bosons:

• Constraints on dark photon dark matter using data from LIGO’s and Virgo’s third observing run
• All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data