A magnetohydrodynamical theorem for steady axisymmetric systems with implications to ring galaxies

Details A magnetohydrodynamical theorem for steady axisymmetric systems with implications to ring galaxies A magnetohydrodynamical theorem for steady axisymmetric systems with implications to ring galaxies

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..86...55b&link_type=abstract

Astrophysics and Space Science, vol. 86, no. 1, Aug. 1982, p. 55-62.

Astronomy and Astrophysics

Astrophysics

1

Galactic Structure, Interstellar Magnetic Fields, Magnetohydrodynamics, Ring Galaxies, Disk Galaxies, Interstellar Gas, Magnetic Field Configurations, Milky Way Galaxy, Radial Distribution, Symmetry

Scientific paper

The MHD theorem indicates that, under certain conditions, magnetic fields either have the direction of the symmetry axis of the system or have field lines encircling this symmetry axis; intermediate directions are excluded. It is noted that ring galaxies are probably of the second type, which would be significant in explaining ring patterns. The Milky Way would be of this second type, though slightly diverging from steady state. The radial distribution of gas and magnetic field in galaxies of the second type is investigated.

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