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Aspects of Collisionless Magnetic Reconnection in Asymmetric SystemsAsymmetric 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 non-vanishing 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.
Document ID
20150019865
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hesse, Michael (NASA Goddard Space Flight Center Greenbelt, MD United States)
Aunai, Nicolas (Space Science Inst. Boulder, CO, United States)
Zeitani, Seiji (National Astronomical Observatory Tokyo, Japan)
Kuznetsova, Masha (NASA Goddard Space Flight Center Greenbelt, MD United States)
Birn, Joachim (Space Science Inst. Boulder, CO, United States)
Date Acquired
October 29, 2015
Publication Date
June 19, 2013
Publication Information
Publication: Physics of Plasma
Volume: 20
Issue: 6
Subject Category
Solar Physics
Report/Patent Number
GSFC-E-DAA-TN26568
Distribution Limits
Public
Copyright
Other
Keywords
Magnetic Reconnection
Asymmetric systems
collisionless

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