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Article Dans Une Revue Physics of Plasmas Année : 2013

Aspects of collisionless magnetic reconnection in asymmetric systems

Michael Hesse
  • Fonction : Auteur
Nicolas Aunai
Seiji Zenitani
  • Fonction : Auteur
M. M. Kuznetsova
  • Fonction : Auteur
Joachim Birn
  • Fonction : Auteur

Résumé

Asymmetric reconnection is being investigated by means of particle-in-cell simulations. The research has two foci: the direction of the reconnection line in configurations with nonvanishing magnetic fields; and the question why reconnection can be faster if a guide field is added to an otherwise unchanged asymmetric configuration. We find that reconnection prefers a direction, which maximizes the available magnetic energy, and show that this direction coincides with the bisection of the angle between the asymptotic magnetic fields. Regarding the difference in reconnection rates between planar and guide field models, we demonstrate that a guide field can provide essential confinement for particles in the reconnection region, which the weaker magnetic field in one of the inflow directions cannot necessarily provide.
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Dates et versions

hal-01552056 , version 1 (30-06-2017)

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Michael Hesse, Nicolas Aunai, Seiji Zenitani, M. M. Kuznetsova, Joachim Birn. Aspects of collisionless magnetic reconnection in asymmetric systems. Physics of Plasmas, 2013, 20, pp.1210. ⟨10.1063/1.4811467⟩. ⟨hal-01552056⟩
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