Physicists discover lowest-ever frequency gravitational waves in pulsar data

A team of physicists have developed a method capable of detecting gravitational waves with unprecedentedly low frequencies. This method could potentially help us comprehend the early phases of mergers between supermassive black holes.

Gravitational waves are like ripples in space. Variations in frequency and amplitude provide information about their origin and age. The waves detected by the research team exhibit an extraordinary range, oscillating at extremely low frequencies. These frequencies are a hundred times lower than previously recorded waves.The researchers deployed a novel detection method based on analyzing pulsars. These rapidly rotating neutron stars emit radio waves at regular intervals.

The team explored the ultralow-frequency domain for continuous-wave signals by studying existing data on these parameters. This exploration revealed a sensitivity closely aligning with the anticipated predictions stemming from inspirals of supermassive black holes. The team’s breakthrough in detecting even lower-frequency gravitational waves potentially offers a way to differentiate between these theories.

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