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VLBI Observations of the Radio Jet in 3C 273

Published online by Cambridge University Press:  03 August 2017

S. C. Unwin  and
R. J. Davis
S. C. Unwin
Affiliation:
California Institute of Technology, Pasadena, U.S.A.
R. J. Davis
Affiliation:
Nuffield Radio Astronomy Laboratories, Jodrell Bank, U.K.

Abstract

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We present a new high dynamic range map of the quasar 3C 273, made from observations with a VLBI network of 12 telescopes. This new map at 18 cm wavelength has one of the highest dynamic ranges yet achieved with VLBI, and it shows the ‘jet’ extending to at least 180 milliarcsec, or 330 pc from the nucleus of the quasar. Strong limits can be placed on the brightness of any ‘counter-jet’ on kiloparsec-scales, as no emission is visible on the opposite side of the ‘core’. Combining with other VLBI, VLA and MERLIN maps shows that the jet is visible and continuous over a very large range of scales, from 1 pc to 40 kpc.

Type
Extragalactic
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 27 - 28
Copyright
Copyright © Reidel 1988 

References

Unwin, S.C., Cohen, M.H., Biretta, J.A., Pearson, T.J., Seielstad, G.A., Walker, R.C., Simon, R.S., and Linfield, R.P.: 1985, Astrophys. J. 289, 109.Google Scholar
Davis, R.J., Muxlow, T.W.B., and Conway, R.G.: 1985, Nature 318, 343.CrossRefGoogle Scholar
Walker, R.C., Benson, J.M., and Unwin, S.C.: 1987, Astrophys. J. 316, 546.Google Scholar