Physics – Plasma Physics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..89..293l&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 89, no. 2, Jan. 1983, p. 293-300. Research supported by the Deutsche Forsc
Physics
Plasma Physics
15
Collisionless Plasmas, Current Sheets, Magnetohydrodynamic Flow, Magnetohydrodynamic Stability, Shear Flow, Tearing Modes (Plasmas), Earth Magnetosphere, Geomagnetism, Mach Number, Plasma Physics, Plasma Waves, Rates (Per Time), Time Dependence
Scientific paper
Tearing modes in a plane collisionless current sheet with shear bulk flow are investigated. An analytic expression for the growth rate is obtained, noting that the growth rates are larger and the unstable wave number domain is increased in comparison with the case without flow. Attention is given to the relevance of these results to time-dependent reconnection processes in the earth's magnetosphere. It is pointed out that the results obtained may have a bearing on applications in space physics. Even though in the near-earth plasma sheet the normal magnetic field component, which is present already in the equilibrium, rules out the electron tearing mode treated here, this might not be true in the far tail. There, one can expect the normal component to be extremely small and the flow to become more important than is the case closer to the earth.
Lakhina Gurbax S.
Schindler Karl
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