August 29, 2012
Pulsars Measure Up to Atomic Clocks
Hamish Johnston, Physics World
An international team of astronomers has come up with a new way of keeping track of time by observing a collection of pulsars – rapidly rotating stars that emit radio pulses at very regular intervals. Although the ultimate goal of the research is to use pulsar timing to detect gravitational waves, the group has shown that the pulsar-based timescale can also be used to reveal inconsistencies in timescales based on atomic clocks.
TAGGED: Pulsars, Atomic Clock