Magnetic fields and the dynamics of the outer disk of spiral galaxies

Details Magnetic fields and the dynamics of the outer disk of spiral galaxies Magnetic fields and the dynamics of the outer disk of spiral galaxies

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..784..784b&link_type=abstract

MAGNETIC FIELDS IN THE UNIVERSE: From Laboratory and Stars to Primordial Structures. AIP Conference Proceedings, Volume 784, pp

Physics

1

Galaxies, Magnetic Fields, Spiral Galaxies, Spiral Arms And Bars, Galactic Disks, Magnetohydrodynamics And Plasmas

Scientific paper

Recent observations may support the hypothesis of magnetically driven rotation curves in spiral galaxies. Following this model three dynamical regions should be expected: 1) An inner region where magnetic fields are ignorable, 2) A region in which the magnetic strength decreases slower than 1/R, and 3) an outermost region where the strength reaches a slope proportional to 1/R. This radial variation is observed in the Milky Way and NGC 6946.

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