Millisecond Pulsars Aren’t Just Dead Stars. They’re the Universe’s Most Sensitive Gravitational Wave Detectors.
A 3.2-millisecond pulsar 3,900 light-years away is the fastest gamma-ray pulsar ever detected. But its real value lies in joining a galactic-scale pulsar timing array that detects low-frequency gravitational waves, offering a new way to ‘hear’ supermassive black hole mergers.