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Mark-III VLBI astrometry of pulsars

Published online by Cambridge University Press:  12 April 2016

Dayton L. Jones ,
Rachel J. Dewey ,
Carl R. Gwinn  and
Michael M. Davis
Dayton L. Jones
Affiliation:
Jet Propulsion Laboratory, Mail Code 238-700, California Institute of Technology, Pasadena, CA. 91109
Rachel J. Dewey
Affiliation:
Jet Propulsion Laboratory, Mail Code 238-700, California Institute of Technology, Pasadena, CA. 91109
Carl R. Gwinn
Affiliation:
Dept. of Physics, University of California, Santa Barbara, CA. 93106
Michael M. Davis
Affiliation:
National Astronomy and Ionosphere Center, Arecibo Observatory, P. 0. Box 995, Arecibo, P.R. 00613

Abstract

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Differential 18-cm VLBI measurements of the position of PSR 1937+214 with respect to the quasar 1923+210 have been made to improve our knowledge of the offset between the planetary ephemeris reference frame and the extragalactic radio reference frame. Our preliminary frame-tie result (VLBI – Timing position) is +21 ± 2 milli-arcseconds in right ascension and +14 ± 9 milli-arcseconds in declination. We describe the data analysis methods used and compare our results with other radio interferometric position measurements of PSR 1937+214. Our results illustrate the value of combining the large collecting area of the Arecibo telescope with the Mk-III VLBI recording system.

Type
VLBI Imaging
Information
International Astronomical Union Colloquium , Volume 131: Radio Interferometry: Theory, Techniques, and Applications , 1991 , pp. 346 - 349
Copyright
Copyright © Astronomical Society of the Pacific 1991

References

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