VLBA Measurement of Nine Pulsar Parallaxes

Details VLBA Measurement of Nine Pulsar Parallaxes VLBA Measurement of Nine Pulsar Parallaxes

2002-04-05

arxiv.org/abs/astro-ph/0204105v1

Astronomy and Astrophysics

Astrophysics

36 pages, Latex, 15 figures. Accepted for publication in ApJ, 2002 June 1

Scientific paper

We determined the distances to nine pulsars by parallax measurements using the NRAO Very Long Baseline Array, doubling the number of pulsars with accurate distance measurements. Broadband phase modeling was used to calibrate the varying dispersive effects of the ionosphere and remove the resulting phase errors from the phase-referenced VLBI data. The resulting parallaxes have a typical accuracy of 100 microarcseconds or better, yielding distances measurements as accurate as 2%. We also report new proper motion measurements of these pulsars, accurate to 0.4 mas per year or better.

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