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arXiv · 1108.5750

The Acceleration of Ions in Solar Flares During Magnetic Reconnection

Kalman Knizhnik·Marc Swisdak·James F. Drake
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Abstract

The acceleration of solar flare ions during magnetic reconnection is explored via particle-in-cell simulations that self-consistently follow the motions of both protons and $α$ particles. We demonstrate that the dominant ion heating during reconnection with a guide field (a magnetic component perpendicular to the reconnection plane) results from pickup behavior during the entry into reconnection exhausts. In contrast with anti-parallel reconnection, the temperature increment is dominantly transverse, rather than parallel, to the local magnetic field. The comparison of protons and alphas reveals a mass-to-charge ($M/Q$) threshold in pickup behavior that favors heating of high $M/Q$ ions over protons, which is consistent with impulsive flare observations.

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Kalman Knizhnik, Marc Swisdak, James F. Drake. 2011-10-10. The Acceleration of Ions in Solar Flares During Magnetic Reconnection. https://doi.org/10.1088/2041-8205%2F743%2F2%2Fl35

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