Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..66..369r&link_type=abstract
Astrophysics and Space Science, vol. 66, no. 2, Dec. 1979, p. 369-384.
Astronomy and Astrophysics
Astrophysics
9
Dynamo Theory, Galactic Structure, Interstellar Magnetic Fields, Rotating Fluids, Turbulent Flow, Astronomical Models, Cosmology, Disks (Shapes), X Ray Sources
Scientific paper
The simplest alpha-omega dynamo in a thin disk is analyzed. If the antisymmetric helicity function alpha(z) (where z is a coordinate perpendicular to the disk plane) is smooth and limited, then the conditions for generating a magnetic field and the symmetry of the resulting solutions depend only on the form of alpha at the segment (O, h) where h is the half-thickness of the disk - and the value of the dimensionless dynamo number D. The old exact solutions of the disk alpha-omega dynamo are studied and new ones are found. The results can be of importance when applied to the problem of the generation of a magnetic field in galactic and turbulent disks appearing around some X-ray sources.
Ruzmaikin Aleksandr
Sokoloff Dimitry
Turchaninov Victor I.
Zeldovich Ia. B.
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