Turbulent Magnetic Reconnection in Two Dimensions

Details Turbulent Magnetic Reconnection in Two Dimensions Turbulent Magnetic Reconnection in Two Dimensions

2009-04-05

arxiv.org/abs/0904.0823v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted to MNRAS

Scientific paper

Two-dimensional numerical simulations of the effect of background turbulence on 2D resistive magnetic reconnection are presented. For sufficiently small values of the resistivity ($\eta$) and moderate values of the turbulent power ($\epsilon$), the reconnection rate is found to have a much weaker dependence on $\eta$ than the Sweet-Parker scaling of $\eta^{1/2}$ and is even consistent with an $\eta-$independent value. For a given value of $\eta$, the dependence of the reconnection rate on the turbulent power exhibits a critical threshold in $\epsilon$ above which the reconnection rate is significantly enhanced.

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