Pulsar timing at UAO (Wang+, 2001)

Details Pulsar timing at UAO (Wang+, 2001) Pulsar timing at UAO (Wang+, 2001)

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..73280855w&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/328/855. Originally published in: 2001MNRAS.328..855W

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Pulsars, Positional Data

Scientific paper

A pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing de-dispersion of the pulsar signals is provided by a 2x128x2.5MHz filterbank/digitizer system. Observations of 74 pulsars over more than 12 months have resulted in updated pulsar periods and period derivatives, as well as improved positions. Comparison with previous measurements showed that the changes in period and period derivative tend to have the same sign and to be correlated in amplitude. A model based on unseen glitches gives a good explanation of the observed changes, suggesting that long-term fluctuations in period and period derivatives are dominated by glitches. In 2000 July, we detected a glitch of relative amplitude {Delta}{nu}/{nu}~24x10-9in the Crab pulsar. The post-glitch decay appears similar to other large Crab glitches.
(1 data file).

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