Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...563l..31b&link_type=abstract
The Astrophysical Journal, Volume 563, Issue 1, pp. L31-L34.
Astronomy and Astrophysics
Astronomy
41
Galaxy: Structure, Ism: Magnetic Fields, Polarization
Scientific paper
High-resolution 21 cm polarization data from the Canadian Galactic Plane Survey are yielding radio sources with well-defined rotation measures (RMs) at a solid angle density of roughly 1 source deg-2, approximately 10 times greater than previous RM surveys in the plane of the Galaxy. The predominance of negative RMs in the second quadrant suggests, in contradiction to previous work, that there is no global magnetic field reversal between the solar circle and the Perseus arm. In addition, these data reveal details in the magnetoionic medium not previously observed and suggest that the random component of the magnetic field may be preferentially aligned to the uniform component, in contrast to the common assumption of an isotropic distribution.
Brown John C.
Taylor Russ A.
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