Scientists are set to embark on a new observation run to search for ripples in space-time generated by colliding black holes and other extreme cosmic events. The 20-month observation, known as O4, will be the most sensitive search for gravitational waves to date, thanks to upgraded instruments, more accurate signal models and advanced data analysis methods. The run is led by the LIGO-Virgo-KAGRA collaboration, which brings together scientists from across the globe, including experts from Cardiff University’s School of Physics and Astronomy. The increased sensitivity means the observation of yet-to-be-detected types of gravitational-wave sources, such as continuous gravitational waves and gravitational-wave background, is more likely.
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