RESISTIVITY-DRIVEN STATE CHANGES IN VERTICALLY STRATIFIED ACCRETION DISKS

@article{Simon2011RESISTIVITYDRIVENSC,
  title={RESISTIVITY-DRIVEN STATE CHANGES IN VERTICALLY STRATIFIED ACCRETION DISKS},
  author={Jacob B. Simon and John F. Hawley and Kris Beckwith},
  journal={The Astrophysical Journal},
  year={2011},
  volume={730},
  pages={94}
}
We investigate the effect of shear viscosity, {nu}, and Ohmic resistivity, {eta}, on the magnetorotational instability (MRI) in vertically stratified accretion disks through a series of local simulations with the Athena code. First, we use a series of unstratified simulations to calibrate physical dissipation as a function of resolution and background field strength; the effect of the magnetic Prandtl number, P{sub m} = {nu}/{eta}, on the turbulence is captured by {approx}32 grid zones per disk… Expand
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