Science
Have pulsars provided a glimpse of gravitational waves from merging supermassive black holes? – physicsworld.com
More than a decade of observations suggests that something is affecting pulsar timings

Pulsar array: artists impression of how NANOGrav observes pulsars in an effort detect gravitational waves. (Courtesy: NANOGrav/T Klein)
The observation of tiny deviations in the arrival times of radio pulses from neutron stars could be our first glimpse at gravitational waves from merging supermassive black holes according to astronomers working on the NANOGrav pulsar timing array. The team has scoured 12.5 years of data from two radio telescopes for evidence of gravitational waves created by the…