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Session 74 - Pulsars.
Display session, Wednesday, January 15
We have performed accurate astrometric observations of the planet pulsar PSR 1257+12 with the VLA on two epochs separated by approximately one year. These observations have resulted in measurements of the absolute position and a preliminary proper motion of PSR 1257+12 with typical accuracies of 100 mas and 30 mas year^-1, respectively. These results are compared to independently-determined values from a pulsar timing analysis. The proper motion measurements agree within the errors, and a discrepancy which existed between the earlier timing and interferometric absolute positions (Wolszczan amp; Frail 1992) has now been resolved.
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