New large-scale magnetic features of the Milky Way

Details New large-scale magnetic features of the Milky Way New large-scale magnetic features of the Milky Way

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.279..115s&link_type=abstract

Nature, Volume 279, Issue 5709, pp. 115-118 (1979).

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74

Scientific paper

A large body of newly determined rotation measures (RM) for extragalactic radio sources gives a new, much clearer picture of the magnetic structure of our Galaxy. The RM sky is dominated by a very strong zone which extends to large (down to b~ -40°) negative galactic latitudes. Both the strength and extent of this feature are greater than appreciated from earlier data. It coincides in angular position with loop II of the non-thermal radio background radiation of the Galaxy. This, and two other strong RM features suggest that our Galaxy has very large-scale magnetic field zones, probably between the spiral arms, and that the prevailing sense of the field is opposite in the interarm regions on each side of the Sagittarius arm.

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