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Generation of magnetic seed fields in self-gravitating protogalactic clouds

G. T. Birk, H. Wiechen, H. Lesch
2002 Astronomy and Astrophysics  

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The seed magnetization of protogalaxies can be provided by relative shear flows and collisional friction of the ionized and the neutral fluid components in partially ionized self-gravitating and rotating protogalactic clouds. The gravitational potential of a collapsing protogalactic cloud is the ultimate energy source that partly is converted to magnetic fields and the associated electric currents by collisional momentum transfer in the partially ionized systems. Self-consistent plasma-neutral
more » ... as simulations, that take into account self-gravitation, show that magnetic fields of the order of some 10 −14 G are generated on spatial scales of some 100 pc in about 7 × 10 6 years.
doi:10.1051/0004-6361:20021026 fatcat:3gnt47nknvdmjdbfnb4s75dypq
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G. T. Birk, H. Wiechen, H. Lesch. "Generation of magnetic seed fields in self-gravitating protogalactic clouds." Astronomy and Astrophysics 393.2 (2002) 685-691