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Observations of Superluminal Motions in 3C 120

Published online by Cambridge University Press:  04 August 2017

R. C. Walker ,
J. M. Benson ,
G. A. Seielstad  and
S. C. Unwin
R. C. Walker
Affiliation:
National Radio Astronomy Observatory*
J. M. Benson
Affiliation:
National Radio Astronomy Observatory*
G. A. Seielstad
Affiliation:
Owens Valley Radio Observatory
S. C. Unwin
Affiliation:
Owens Valley Radio Observatory

Extract

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Superluminal motions were first seen in 3C 120 between 1972.5 and 1974.4 (Seielstad et al. 1979 and references therein). Between 1975 and 1980, the source was monitored along with 3C 273 and 3C 345 by the Caltech group. One reasonably clear episode of expansion was seen in 1979 (Walker et al. 1982) but, for most of the time, the source evolution was so rapid that it was difficult to relate the structures seen at successive epochs.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 121 - 124
Copyright
Copyright © Reidel 1984 

References

Blandford, R. D., and Konigl, A. 1979, Ap. J., 232, pp. 34–48.Google Scholar
Seielstad, G. A., Cohen, M. H., Linfield, R. P., Moffet, A. T., Romney, J. D., Schilizzi, R. T., and Shaffer, D. B. 1979, Ap. J., 229, pp. 53–72.Google Scholar
Walker, R. C., Seielstad, G. A., Simon, R. S., Unwin, S. C., Cohen, M. H., Pearson, T. J., and Linfield, R. P. 1982, Ap. J., 257, pp. 56–62.Google Scholar