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The Radio Lobes of Virgo A

Published online by Cambridge University Press:  25 May 2016

H. Rottmann ,
K.-H. Mack ,
U. Klein ,
R. Wielebinski ,
N. Kassim  and
R. Perley
H. Rottmann
Affiliation:
Radioastronomisches Institut der Universität Bonn - Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck Institut für Radioastronomie - Auf dem Hügel 69, 53121 Bonn, Germany Naval Research Laboratory, Washington DC 20375-5351, USA NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA
K.-H. Mack
Affiliation:
Radioastronomisches Institut der Universität Bonn - Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck Institut für Radioastronomie - Auf dem Hügel 69, 53121 Bonn, Germany Naval Research Laboratory, Washington DC 20375-5351, USA NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA
U. Klein
Affiliation:
Radioastronomisches Institut der Universität Bonn - Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck Institut für Radioastronomie - Auf dem Hügel 69, 53121 Bonn, Germany Naval Research Laboratory, Washington DC 20375-5351, USA NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA
R. Wielebinski
Affiliation:
Radioastronomisches Institut der Universität Bonn - Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck Institut für Radioastronomie - Auf dem Hügel 69, 53121 Bonn, Germany Naval Research Laboratory, Washington DC 20375-5351, USA NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA
N. Kassim
Affiliation:
Radioastronomisches Institut der Universität Bonn - Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck Institut für Radioastronomie - Auf dem Hügel 69, 53121 Bonn, Germany Naval Research Laboratory, Washington DC 20375-5351, USA NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA
R. Perley
Affiliation:
NRAO, P.O. Box 0, Socorro, New Mexico 87801, USA

Extract

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In the framework of our multi-frequency study of Virgo A we have performed observations of Vir A at 10.55 GHz with the Effelsberg 100-m telescope. Using our improved CLEAN procedure for single dish data we have increased the dynamic range to some 40 dB.

By applying our newly developed polarization CLEANing technique we are able to diminish instrumental polarization effects. Since Faraday rotation is negligible at λ2.8 cm the measured linear polarization is a direct trace of the projected magnetic field in Vir A. In combination with low-frequency data obtained with the VLA it is possible to determine parameters like spectral indices, break frequencies, and spectral ages.

Type
Radio Sources and their Environment
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 343 - 344
Copyright
Copyright © Kluwer 1996 

References

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