Progress on millisecond pulsar timing observations

Details Progress on millisecond pulsar timing observations Progress on millisecond pulsar timing observations

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pabei..23....1y&link_type=abstract

Progress in Astronomy (ISSN 1000-8349), Vol. 23, No. 1, p. 1 - 9 (2005)

Astronomy and Astrophysics

Astronomy

1

Astrometry, Pulsar Time Scale, Review, Time Stability, Millisecond Pulsar, Pulsar Timing Array (Pta)

Scientific paper

Long term timing stability for some millisecond pulsars is reviewed and analyzed. Comparison between PSR B1855+09 timing results from Arecibo and some atomic time scales exhibits that the long term stability of the pulsar σz(τ) at τ≥15 yr is better than that of atomic time scale TAI-USNO and approaches TAI-PTB. Short term timing behavior for this pulsar is mainly affected by its larger timing error. When more regular timing observations are made and more radio telescopes contribute to timing observations of this pulsar the timing stability of PSR B1855+09 may be further improved. Millisecond pulsar PSR J0437-47 is a perfect celestial clock, its timing stability is obviously better than PSR B1855-09 and some atomic time scales. Long term stabilities of PSR B1937+21 and PSR J1713-07 seem limited by low frequency timing noise. However they may contribute to make an ensemble pulsar time scale. Millisecond pulsar timing array (PTA) has been developed and operated over the world. Uniform distribution on the sky of target millisecond pulsars is needed and some common millisecond pulsars for timing of PTAs are also important to connection of PTAs. Information on errors of atomic time scale and ephemeris may be derived and gravitational wave may be detected from PTAs. In the future, powerful Square Kilometer Array (SKA) will make contribution to both new pular search and high precision timing observations for millisecond pulsars.

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