Flux Pileup in Collisionless Magnetic Reconnection: Bursty Interaction of Large Flux Ropes

Details Flux Pileup in Collisionless Magnetic Reconnection: Bursty Interaction of Large Flux Ropes Flux Pileup in Collisionless Magnetic Reconnection: Bursty Interaction of Large Flux Ropes

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrvl.107b5002k&link_type=abstract

Physical Review Letters, vol. 107, Issue 2, id. 025002

Physics

3

Magnetic Reconnection, Magnetic Reconnection, Particle Acceleration, Magnetic Reconnection

Scientific paper

Using fully kinetic simulations of the island coalescence problem for a range of system sizes greatly exceeding kinetic scales, the phenomenon of flux pileup in the collisionless regime is demonstrated. While small islands on the scale of λ≤5 ion inertial length (di) coalesce rapidly and do not support significant flux pileup, coalescence of larger islands is characterized by large flux pileup and a weaker time averaged reconnection rate that scales as di/λ while the peak rate remains nearly independent of island size. For the largest islands (λ=100di), reconnection is bursty and nearly shuts off after the first bounce, reconnecting ˜20% of the available flux.

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