binary neutron star merger

GOTO follow-up of gravitational-wave alerts during LIGO-Virgo-KAGRA’s fourth observing run

Between April 2023 and November 2025, the fourth LIGO-Virgo-KAGRA observing run (O4) delivered an unprecedented stream of gravitational-wave alerts to the astronomical community. There were a total of 5,466 candidate alerts that were released – an order-of-magnitude increase compared to previous observing runs. GOTO listened to the alert stream using the full telescope network of…

KN Seekers back online after major upgrade

We are excited to announce that Kilonova Seekers has re-launched and entered Generation 3, marking the next phase of the project and a major update to how volunteer classifications help contribute to both discovery and machine learning. For those new to the project, Kilonova Seekers is a citizen-science project that uses data from the Gravitational-wave…