GWSkyNet: a real-time classifier for public gravitational-wave candidates

Understand

The rapid release of accurate sky localization for gravitational-wave candidates is crucial for multi-messenger observations.

• During the third observing run of Advanced LIGO and Advanced Virgo, automated gravitational-wave alerts were publicly released within minutes of detection.
• Subsequent inspection and analysis resulted in the eventual retraction of a fraction of the candidates.
• Updates could be delayed by up to several days, sometimes issued during or after exhaustive multi-messenger followup campaigns.