Reversing the axisymmetric (m = 0) magnetic fields in the Milky Way

Details Reversing the axisymmetric (m = 0) magnetic fields in the Milky Way Reversing the axisymmetric (m = 0) magnetic fields in the Milky Way

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...366..450v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 366, Jan. 10, 1991, p. 450-454.

Astronomy and Astrophysics

Astrophysics

42

Interstellar Magnetic Fields, Magnetohydrodynamics, Milky Way Galaxy, Azimuth, Dynamo Theory, Lines Of Force

Scientific paper

Turbulent dynamo theory (TDT) is applied to explain the observed radial dependence of the azimuthal magnetic field of the Galaxy. Observational data on the azimuthal, radial, and vertical components are presented in tables and analyzed. It is found that the data support an axisymmetric shape corresponding to azimuthal mode m = 0, while the magnetic-field configuration near the spiral arms is in good agreement with the TDT radial field equation, with the two field reversals corresponding to radial modes n = 0, 1, and 2. Above and below the Galactic plane, the magnetic field is well described by the lowest (p = 0) vertical mode of the TDT.

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