Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981acasn..22..299x&link_type=abstract
Acta Astronomica Sinica, vol. 22, Sept. 1981, p. 299-304. In Chinese, with abstract in English.
Astronomy and Astrophysics
Astronomy
Angular Velocity, Earth Rotation, Periodic Variations, Pulsars, Data Correlation, Instrument Errors, Rotary Stability, Spin Dynamics, Time Measurement, Velocity Measurement
Scientific paper
The effects of the variations in the angular velocity of earth rotation on observed changes in pulsar periods are discussed. It is suggested that the variations are influential when the arrival times of the pulses are reduced from the topocenter to the barycenter of the solar system. The change in the observed pulsar period is noted to be possibly larger than the period itself. The magnitude of the effect depends on the declination of the pulsar and the altitude of the observing station, and higher declinations and latitudes result in smaller magnitudes. Finally, it is cautioned that while observing at upper or lower culmination, the effect on the rate of change of the pulsar period becomes larger.
Rong Jian-Xiang
Xia Yi-Fei
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