Previous abstract Next abstract

Session 74 - Pulsars.
Display session, Wednesday, January 15
Metropolitan Ballroom,

[74.04] The Position and Proper Motion of PSR\thinspaceB1257+12

C. O. Heinke (Carleton College), D. A. Frail (NRAO), A. Wolszczan (Penn State)

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.

Program listing for Wednesday