Other
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.340..537s&link_type=abstract
Nature (ISSN 0028-0836), vol. 340, Aug. 17, 1989, p. 537-539. Research supported by the University of Illinois and NSF.
Other
50
Galactic Structure, Interstellar Magnetic Fields, Magnetic Field Configurations, Spiral Galaxies, Faraday Effect, Linear Polarization, Star Formation, Synchrotron Radiation, Very Large Array (Vla)
Scientific paper
The linear polarization at a spatial resolution of about 2 kpc has been measured in VLA observations of 20-cm continuum radio emission from the bright, nearly face-on, spiral galaxy M83. The strongest linearly polarized emission is from two giant arcs, about 30 kpc long, situated roughly opposite each other in the dark outer regions of the galaxy, about 12 kpc from the center. These regions do not coincide with any prominent spiral arm tracers and, from a comparison with earlier results at 6 cm wavelength, it is concluded that the low polarization in the center of the galaxy indicates disorder in the interstellar magnetic field, probably connected with star formation activity observed there.
Allen Rosalind J.
Sukumar S.
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