Improved interferometric positions for pulsars

Details Improved interferometric positions for pulsars Improved interferometric positions for pulsars

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...233..605s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 233, no. 2, July 1990, p. 605-607.

Astronomy and Astrophysics

Astrophysics

1

Position Sensing, Pulsars, Pulsed Radiation, Radio Interferometers, Astrometry, Astronomical Catalogs, Interferometry, Position (Location), Signal To Noise Ratios

Scientific paper

The positions of some forty pulsars have been determined using the Westerbork Telescope at 92 cm and, in three cases, 49 cm. The typical accuracy is about 3 arcsec, and for 10 pulsars this improves upon published values. In the case of PSR 0611 + 22 the old position obtained by timing is found to be in error by nearly 5 arcmin, far exceeding the stated uncertainty. The observations employ an unconventional technique for a synthesis instrument whereby the radio emission is sampled synchronously in phase with the pulses, providing improvement in the SNR and enabling the pulsar to be readily distinguished from the many background sources in a typical low frequency field.

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