Viscous Shear Instability in Weakly Magnetized , Dilute Plasmas

  title={Viscous Shear Instability in Weakly Magnetized , Dilute Plasmas},
  author={Steven Balbus},
When the ion mean free path much exceeds the Larmor radius in a plasma, the viscous stress tensor is altered dramatically, and depends only upon quantities measured along the field lines. This regime corresponds to typical interstellar medium conditions in galaxies and protogalaxies, even if the magnetic field is extremely weak, with a negligible Lorentz force on all scales of interest. In this work, the only role of the magnetic field is to channel angular momentum transport along its lines of… CONTINUE READING
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