Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-23T14:50:36.435Z Has data issue: false hasContentIssue false
  • English
  • Français

Linearly Polarised Radio Emission from M83 (NGC 5236) and NGC 891

Published online by Cambridge University Press:  19 July 2016

S. Sukumar  and
R.J. Allen
S. Sukumar
Affiliation:
1Department of Astronomy, University of Illinois, Urbana, IL 61801, USA
R.J. Allen
Affiliation:
1Department of Astronomy, University of Illinois, Urbana, IL 61801, USA 2National Center for Supercomputing Applications, University of Illinois, Urbana, IL 61801, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Recent VLA 20 cm radio continuum observations of the southern face-on barred spiral M83 reveal that the magnetic field is very highly aligned at the outer regions (~12 kpc radius) and totally disrupted in the inner regions (<6 kpc) of the galaxy. The RM variation suggests an axisymmetric morphology for the magnetic field. VLA 6 cm continuum polarization observations of the edge-on spiral NGC 891 reveal ordered magnetic fields at large Z-distances (~3 kpc) from the galactic plane, probably emanating from the disk through instabilities.

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. 215 - 218
Copyright
Copyright © Kluwer 1990 

References

Sukumar, S., Klein, U., and Gräve, R. (1987) ‘Multi-frequency radio continuum observations of NGC 5236 (M83)’, Astron. Astrophys. 184, 71–78.Google Scholar
Sukumar, S. and Allen, R.J. (1989) ‘Large-scale magnetic-field structure in the spiral galaxy M83’, Nature, 340, 537–539.CrossRefGoogle Scholar
Sukumar, S., Allen, R.J., and Klein, U. (1990) ‘Axisymmetric magnetic field structure of M83’, Astron. Astrophys. submitted.Google Scholar