HR: 0800h
AN: SH51D-0298    [Abstracts]
TI: Self-Magnetization of the Early Solar System Matter
AU: * Wiechen, H M
EM: hew@gi.alaska.edu
AF: Geophysical Institute University of Alaska Fairbanks, 903 Koyukuk Drive, Fairbanks, AK 99775-7320 United States
AB: The remnant magnetization of chondrite type meteorite matter indicates the existence of $10^{-5}$ - $10^{-3}$ Tesla magnetic fields in the early solar system accretion disk. Taking into account parameter regimes being typical for this early evolutionary stage of the partially ionized dusty proto-solar accretion disk we performed self-consistent three-dimensional multi fluid plasma - neutral gas - dust simulations. The results of our systematic simulations show that shear flow driven collisional interactions are able to yield self-induced magnetic fields of the order of $10^{-5}$ - $10^{-3}$ Tesla in a dusty proto-planetary accretion disk on very short time scales of the order of a few years. Thus, shear flow induced self-magnetization can yield a significant contribution to the magnetization of the early solar system and is able to explain the measured remnant magnetization of meteorite material.
DE: 5465 Rings and dust
DE: 5759 Rings and dust
DE: 6015 Dust
DE: 6213 Dust
DE: 2129 Interplanetary dust
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting