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Polarized Radio Emission from NGC 6946

Published online by Cambridge University Press:  19 July 2016

R. Beck ,
U.R. Buczilowski  and
J.I. Harnett
R. Beck
Affiliation:
1Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 D-5300 Bonn 1, F.R.G.
U.R. Buczilowski
Affiliation:
1Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 D-5300 Bonn 1, F.R.G.
J.I. Harnett
Affiliation:
2University of Sydney N.S.W. 2006, Australia

Abstract

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New VLA radio observations of NGC 6946 reveal a complicated structure of the magnetic field with possibly radial changes in the foreground Faraday rotation, the strength of the uniform field and the particular dynamo mode in operation. The uniform field is strongest in the interarm regions, but shows no deducible large-scale structure in the radius range of the optical spiral arms. The high star formation rate in NGC 6946 apparently increases the turbulence of the interstellar magnetic field.

Type
5. The Polarization, Magnetic Field and Velocity Structure of External Spiral Galaxies
Information
Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 213 - 214
Copyright
Copyright © Kluwer 1990 

References

Harnett, J.I., Beck, R. and Buczilowski, U.R. (1989) Astron. Astrophys. 208, 32–38.Google Scholar
Klein, U., Beck, R., Buczilowski, U.R. and Wielebinski, R. (1982) Astron. Astrophys. 108, 176–187.Google Scholar