Pulsar Timing Arrays Could Look for Evidence of Dark Matter Stars

Pulsars are incredibly precise cosmic clocks. So precise that we can use them to measure subtle changes in their position thanks to the Doppler effect. Pulsar timings were used to prove the existence of gravitational waves long before we could observe them directly. This has led to the idea of a pulsar timing array (PTA). Observe lots of pulsars over time, then look at their timing shifts statistically to study gravitational waves on a cosmic scale.