Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm42b..01l&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM42B-01
Physics
Plasma Physics
[7526] Solar Physics, Astrophysics, And Astronomy / Magnetic Reconnection, [7831] Space Plasma Physics / Laboratory Studies And Experimental Techniques, [7863] Space Plasma Physics / Turbulence
Scientific paper
While the magnetic field may cause damping of fluid motions when magnetic diffusion is dominant (low magnetic Reynolds number or Interaction parameter), this is not the situation in many astrophysical or geophysical flows. Instead, the magnetic field's primary role is to add elasticity (field line tension). In the simplest cases, these restoring forces add slow or fast wave modes to the flows -- Alfén waves or magneto-rotational modes. In more strongly turbulent or intermittent cases, the elasticity plays a role in the recoil of reconnected magnetic fields. We also discuss the possible role of reconnection in particle acceleration, and the analogies between high-Rm MHD turbulence and superfluid turbulence.
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