Millisecond Pulsar Timing Observations at CRL

Details Millisecond Pulsar Timing Observations at CRL Millisecond Pulsar Timing Observations at CRL

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001crlrv..47..137h&link_type=abstract

Review of the Communications Research Laboratory, vol. 47, p. 137

Physics

Optics

Acousto-Optics, Clocks, Construction, Digital Systems, Pulsars, Real Time Operation, Time Measurement, Broadband, Observation, Spectrometers, Stability, Superhigh Frequencies

Scientific paper

Millisecond pulsars are attractive for use as future reference clocks because of their highly stable pulse timing. Communications Research Laboratory (CRL) aims to apply millisecond pulsars to the construction of a new time scale, and has developed a millisecond pulsar observation system using the 34-m antenna at Kashima Space Research Center. This system uses an acousto-optic spectrometer (AOS) for wide-band observation and a special digital processor for the numerous pulse integration tasks in real-time. Using this system, we started in November 1997 weekly observations of PSR1937+21 using the 34-m antenna in the S-band. The residuals of pulse phases over two years show some drift, and more precise timing analysis is required. Current observation precision is 2.9 microns for oneday's observation, which shows that the 34-m antenna's performance is sufficient for the highly precise timing measurement for the quite weak pulse signals of millisecond pulsars.

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