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Suppression of Collisionless Magnetic Reconnection in Asymmetric Current SheetsUsing fully kinetic simulations, we study the suppression of asymmetric reconnection in the limit where the diamagnetic drift speed >> Alfven speed and the magnetic shear angle is moderate. We demonstrate that the slippage between electrons and the magnetic flux mitigates the suppression and can even result in fast reconnection that lacks one of the outflow jets. Through comparing a case where the diamagnetic drift is supported by the temperature gradient with a companion case that has a density gradient instead, we identify a robust suppression mechanism. The drift of the x-line is slowed down locally by the asymmetric nature of the x-line, and then the x-line is run over and swallowed by the faster-moving following flux.
Document ID
20160010367
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Liu, Yi-Hsin
(Universities Space Research Association Greenbelt, MD, United States)
Hesse, Michael
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 16, 2016
Publication Date
June 29, 2016
Publication Information
Publication: Physics of Plasmas
Publisher: AIP Publishing
Volume: 23
e-ISSN: 1089-7674
Subject Category
Solar Physics
Report/Patent Number
GSFC-E-DAA-TN33737
Funding Number(s)
CONTRACT_GRANT: NNH15CO48B
Distribution Limits
Public
Copyright
Other
Keywords
Magnetic
Reconnection
Diamagnetism

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