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3C 216: Is It the CSS Source with the Highest Rotation Measure?

Published online by Cambridge University Press:  12 April 2016

E. Lüdke ,
W. D. Cotton ,
H. S. Sanghera  and
D. Dallacasa
E. Lüdke
Affiliation:
UFSM-CCNE and LACESM-CT, Campus Universitário, 97119-900 Santa Maria RS, Brazil
W. D. Cotton
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA 22903, U.S.A.
H. S. Sanghera
Affiliation:
Joint Institute for VLBI in Europe, 7990 AA Dwingeloo, The Netherlands
D. Dallacasa
Affiliation:
Istituto di Radioastronomia CNR, I-40126 Bologna, Italy

Abstract

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We discuss our VLBA observations at 5 and 2.7 GHz and our MERLIN observations at 1.6 and 5 GHz. A MERLIN+VLBA image provided good starting model for self-calibration and we obtained an unprecedent image of the bent jet of 3C 216. Our observations suggest the detection of strong polarization position angle variation across the observing band. If this is due to Faraday rotation then 3C216 may have a four-figure observed rotation measure, which is unlikely to be due to errors in the polarization position angle calibration.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 183 - 184
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

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