Statistics – Applications
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.6914k&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #69.14; Bulletin of the American Astronomical Society, Vol. 31, p.936
Statistics
Applications
Scientific paper
We investigate magnetic shear and buoyancy instabilities in protostellar winds by solving a set of linearized ideal MHD equations for modes varying as e({i(mphi ) +k_z z -omega t)}. We derive a general wave equation for each such mode, assuming a cold background flow and magnetic field with axial and toroidal components and arbitrary radial shear. For particular realizations we use power-law cold wind equilibria: rho ~ R(-q) , vec {B} ~ R(-(1+q)/2) , and vec {v} ~ R(-1/2) . For background states with these profiles, we derive the general non-axisymmetric local dispersion relation, and explore its solutions in various limits. We identify nine principal unstable or overstable modes. Our results primarily apply to winds but we also discuss applications in rotating disks. When magnetic fields are predominantly toroidal, as in protostellar winds, the system exhibits axisymmetric fundamental and toroidal resonance modes, and non-axisymmetric toroidal buoyancy and magnetic shearing modes. Winds having a steep field gradient (0.76
Kim Woong-Tae
Ostriker Eve C.
No associations
LandOfFree
Stability Analysis of Magnetocentrifugally Driven Winds from Young Stars 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 Stability Analysis of Magnetocentrifugally Driven Winds from Young Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability Analysis of Magnetocentrifugally Driven Winds from Young Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1121121