Search for Neutrino Counterparts to Gravitational Wave Events in Super-Kamiokande during the LIGO/Virgo/KAGRA O4 Observing Run

In recent years, the Super-Kamiokande (SK) experiment has contributed to multi-messenger astronomy by searching for neutrino signals in coincidence with gravitational wave events. The fourth observing run (O4) of the LIGO/Virgo/KAGRA collaborations started in May 2023. During the initial phase, known as O4a, LIGO identified 81 gravitational wave candidates. Neutrino follow-up searches with O4a were performed in SK. While no significant signal was observed, flux limits were computed.