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Volume 34, issue 4
Ann. Geophys., 34, 421–425, 2016
https://doi.org/10.5194/angeo-34-421-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 34, 421–425, 2016
https://doi.org/10.5194/angeo-34-421-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

ANGEO Communicates 13 Apr 2016

ANGEO Communicates | 13 Apr 2016

The influence of resistivity gradients on shock conditions for a Petschek reconnection geometry

Christian Nabert and Karl-Heinz Glassmeier

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Electrical resistivity can influence the occurrence of shock waves. We derive analytically necessary conditions for shocks in a nonuniform resistive magnetohydrodynamic plasma. The nonuniform resistivity significantly modifies the characteristic velocity of wave propagation. A sufficient gradient of the resistivity in a diffusion region can satisfy the necessary condition for the occurrence of slow shocks, which is related to Petschek reconnection.
Electrical resistivity can influence the occurrence of shock waves. We derive analytically...
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