Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dda....38.0101s&link_type=abstract
American Astronomical Society, DDA meeting #38, #1.01
Astronomy and Astrophysics
Astronomy
Scientific paper
We present self-consistent models of disk accretion driven by the magneto-rotational instability associated with magnetic fields dragged in by a process of gravitational collapse from rotating, magnetized, molecular cloud cores. We compare such star-formation models with constraints from astronomical observations, meteoritic investigations, and comet sample returns. We show that previous theoretical studies have missed two crucial effects: (1) the fact that diffusion is occurring not only via a viscous redistribution of angular momentum but also by a non-ideal drift of inwardly moving matter across magnetic field lines that thread vertically through the disk, and (2) that realistic circumstances may result in magnetically pinched disks which rotate at substantially sub-Keplerian speeds. We also argue that the complete data set cannot be understood for sunlike stars without incorporating the interaction of the inner edge of the accretion disk with the magnetosphere of the central star that results in X-winds and funnel flows, with important, incompletely examined, consequences for the processes of planet formation.
No associations
LandOfFree
Magnetohydrodynamics of Star Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetohydrodynamics of Star Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetohydrodynamics of Star Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1662560