Physics – Plasma Physics
Scientific paper
Nov 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..dppup6016p&link_type=abstract
American Physical Society, 50th Annual Meeting of the Division of Plasma Physics, November 17-21, 2008, abstract #UP6.016
Physics
Plasma Physics
Scientific paper
Rapid transport of angular momentum in astrophysical disks can be explained through the stresses arising from MHD instabilities. Here, we examine momentum transport from current-driven and flow-driven instabilities in disk geometry. We perform nonlinear MHD computations both for turbulence generated by tearing modes and by flow-driven Magneto-Rotational Instability (MRI). We find that in an MRI stable disk configuration, tearing modes can grow and cause transport of momentum. The effects of disk thickness and flow magnitude in momentum transport from tearing and MRI instabilities will be shown. We also examine the saturation mechanism of flow-driven instability through analytical quasilinear theory and through nonlinear computation of a single mode in a rotating disk. We show that the generation of large-scale magnetic field through the alpha effect causes the MRI mode to saturate.
Ebrahimi Fatemeh
Prager Stewart C.
Schnack Dalton D.
No associations
LandOfFree
Momentum transport from current-driven and flow-driven instabilities in astrophysical disks 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 Momentum transport from current-driven and flow-driven instabilities in astrophysical disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Momentum transport from current-driven and flow-driven instabilities in astrophysical disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1842708