Numerical comparison between a gyrofluid and gyrokinetic model investigating collisionless magnetic reconnection

  title={Numerical comparison between a gyrofluid and gyrokinetic model investigating collisionless magnetic reconnection},
  author={Otto Zacharias and Luca Comisso and Daniela Grasso and Ralf Kleiber and Matthias Borchardt and Roman Hatzky},
  journal={Physics of Plasmas},
The first detailed comparison between gyrokinetic and gyrofluid simulations of collisionless magnetic reconnection has been carried out. Both the linear and nonlinear evolution of the collisionless tearing mode have been analyzed. In the linear regime, we have found a good agreement between the two approaches over the whole spectrum of linearly unstable wave numbers, both in the drift kinetic limit and for finite ion temperature. Nonlinearly, focusing on the small-Δ′ regime, with Δ′ indicating… 
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