Update on the Fourth Observing Run (O4) of the LIGO-Virgo-KAGRA Collaboration

The LIGO-Virgo-KAGRA (LVK) collaboration has been conducting the fourth observing run (O4), which has been temporarily suspended since April 1, 2025. The run was initially scheduled to resume on June 4. However, to carry out additional preparations for the restart, the resumption date has been postponed to June 11.

KAGRA has been preparing for the restart of observations and is planning to resume operations in coordination with LIGO and Virgo on June 11.