Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-12T08:36:46.100Z Has data issue: false hasContentIssue false
  • English
  • Français

Position Solution of Compact Radio Sources Using Long Coherence VLBI

Published online by Cambridge University Press:  14 August 2015

J. S. Gubbay ,
A. J. Legg  and
D. S. Robertson
J. S. Gubbay
Affiliation:
Australian Defence Scientific Service, Dept. of Supply, Weapons Research Establishment, Salisbury, South Australia
A. J. Legg
Affiliation:
Australian Defence Scientific Service, Dept. of Supply, Weapons Research Establishment, Salisbury, South Australia
D. S. Robertson
Affiliation:
Australian Defence Scientific Service, Dept. of Supply, Weapons Research Establishment, Salisbury, South Australia

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Compact components of several radio sources were observed in the course of VLBI observations at S-band between NASA-JPL Deep Space Stations located in Australia, South Africa and California, U.S.A., during the southern summer of 1971–72. These stations were equipped with H-maser frequency standards over this period so that the fringe frequency could be determined to better than 1 mHz.

The internal consistency of the position solution could be assessed for sources observed at least three times. This varied with source declination from ± 0″.1 at a declination of 45° to ± 2″.0 near the equator.

The spread in the position solution for P0727-11, a rapid variable at the observing frequency, was also large.

Positions obtained for some other sources have been used to assist in the identification of associated optical objects.

Type
Session C: Radio Astrometry
Information
Symposium - International Astronomical Union , Volume 61: New Problems in Astrometry , 1974 , pp. 125 - 129
Copyright
Copyright © Reidel 1974 

References

Barbieri, C., Capaccioli, M., Ganz, R., and Pinto, G.: 1972, Astron. J. 77, 444.Google Scholar
Cohen, M. H. and Shaffer, D. B.: 1971, Astron. J. 76, 91.Google Scholar
Fanselow, J. L., MacDoran, P. F., Thomas, J. B., Williams, J. G., Finnie, C. J., Sato, T., Skjerve, L., and Spitzmesser, D. J.: 1971, JPL Tech. Rept. 32–1526. Vol. V, pp. 45–57.Google Scholar
Kristian, J. and Sandage, A.: 1970, Astrophys. J. 162, 391.Google Scholar
Rogers, A. E. E., Counselman, C. C. III, Hinteregger, H. F., Knight, C. A., Robertson, D. S., Shapiro, I. I., Shitney, A. R., and Clark, T. A.: 1974, submitted to Astrophys. J. Letters .Google Scholar