An ensemble pulsar time

Details An ensemble pulsar time An ensemble pulsar time

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ptti.meet...73p&link_type=abstract

In NASA. Goddard Space Flight Center, The 24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting p

Statistics

Applications

7

Atomic Clocks, Pulsars, Time Measurement, Flywheels, Stability

Scientific paper

Millisecond pulsars are galactic objects that exhibit a very stable spinning period. Several tens of these celestial clocks have now been discovered, which opens the possibility that an average time scale may be deduced through a long-term stability algorithm. Such an ensemble average makes it possible to reduce the level of the instabilities originating from the pulsars or from other sources of noise, which are unknown but independent. The basis for such an algorithm is presented and applied to real pulsar data. It is shown that pulsar time could shortly become more stable than the present atomic time, for averaging times of a few years. Pulsar time can also be used as a flywheel to maintain the accuracy of atomic time in case of temporary failure of the primary standards, or to transfer the improved accuracy of future standards back to the present.

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