Particle Acceleration and Multi-island Coalescence in the Magnetotail

Details Particle Acceleration and Multi-island Coalescence in the Magnetotail Particle Acceleration and Multi-island Coalescence in the Magnetotail

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm24b..05o&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM24B-05

Physics

Plasma Physics

[7835] Space Plasma Physics / Magnetic Reconnection

Scientific paper

Particle-in-cell (PIC) simulations of magnetic reconnection are performed to study multi-island coalescence and associated particle acceleration. Although it has been pointed out that multi-island coalescence leads to efficient particle acceleration, detailed analysis of energy spectrum and particle behaviors had not been carried out. Here, we start by comparing two different runs. The first run produces a dominant X-line at which particles are continuously accelerated by the reconnection electric field. The second run produces multiple magnetic islands that eventually merge each other. Particles are accelerated in a bursty manner during each coalescence phase. We have found that the second run produces more energetic particles (both ions and electrons) compared to the first run. We will discuss the details of the efficiency and the mechanism of particle acceleration.

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