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Observations of 3C273 with high north-south resolution

Published online by Cambridge University Press:  19 July 2016

M. Cohen ,
J. Biretta ,
R. Schaal ,
G. Comoretto ,
L. Bååth  and
G. Nicholson
M. Cohen
Affiliation:
Caltech, Pasadena, CA 91125, USA
J. Biretta
Affiliation:
Caltech, Pasadena, CA 91125, USA
R. Schaal
Affiliation:
Itapetinga Radio Observatory, INPE, S. J. dos Campos, SP, Brazil
G. Comoretto
Affiliation:
Instituto di Radioastronomia, via Irnerio 46, Bologna, Italy
L. Bååth
Affiliation:
Onsala Space Observatory, Onsala, Sweden
G. Nicholson
Affiliation:
National Inst. Telecommunications Research, Johannesburg 2000, S.A.

Extract

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The quasar 3C273 lies at a declination of +2°. Maps made with northern hemisphere VLBI Networks clearly show superluminal motion, but the north-south resolution is poor and details cannot be seen. We have now made two observations at 10.7 GHz with the Itapetinga Radio Observatory in Brazil, and one at 5.0 GHz using the Hartebeesthoek Observatory in South Africa along with the European and U.S. VLBI Networks (Biretta et al. 1985).

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 159 - 160
Copyright
Copyright © Reidel 1986 

References

Biretta, J. A. et al.: 1983, Nature 306, 42.CrossRefGoogle Scholar
Biretta, J. A. et al.: 1985, Astrophys. J. Letters 292, L5.Google Scholar
Moore, R. L., Readhead, A. C. S., and Bååth, L. B.: 1983, Nature 306, 44.CrossRefGoogle Scholar