Effect of an ensemble of explosions on the Galactic dynamo. I - General formulation

Details Effect of an ensemble of explosions on the Galactic dynamo. I - General formulation Effect of an ensemble of explosions on the Galactic dynamo. I - General formulation

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389..286f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 389, April 10, 1992, p. 286-296.

Astronomy and Astrophysics

Astrophysics

34

Dynamo Theory, Electromotive Forces, Interstellar Magnetic Fields, Interstellar Matter, Magnetohydrodynamics, Milky Way Galaxy, Coriolis Effect, Galactic Rotation, Galactic Structure, Lines Of Force, Supernovae, Synchrotron Radiation

Scientific paper

A general analytical expression for the electromotive force produced by a field of explosions in the Galactic disk is derived. Spherically symmetric and axisymmetric explosions successively are considered. The velocity and magnetic fields associated with one explosion and average their cross-product over a spatial distribution of explosions are first calculated. Simple expressions for the magnetic flux escape velocity and for the so-called alpha parameter are then provided.

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