Structure of the magnetic field near the galactic plane

Details Structure of the magnetic field near the galactic plane Structure of the magnetic field near the galactic plane

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap.....54..177a&link_type=abstract

Astrophysics, Volume 54, Issue 2, pp.177-183

Astronomy and Astrophysics

Astrophysics

Galaxy: Magnetic Field

Scientific paper

A method is introduced for constructing two-color maps for the in-plane component of the magnetic field of our galaxy in (R, l) and (DM, l) coordinates. It is shown that, in agreement with the standard models of the galactic magnetic field, the magnetic field in neighboring spiral arms reverses direction. However, the magnetic field in the spiral arm of Sagittarius differs significantly from the standard magnetic field model, with the major difference being that the magnetic fields in the southern and northern hemispheres are oppositely directed in the spiral arm of Sagittarius. It is proposed that this distribution of the magnetic field can be explained best by assuming that the spiral arm of Sagittarius, or, at least, a magnetic spiral arm in that region, is not symmetric with respect to the galactic plane and lies mainly in the northern hemisphere.

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