{ "id": "1108.5750", "version": "v2", "published": "2011-08-29T20:43:34.000Z", "updated": "2011-10-10T15:58:58.000Z", "title": "The Acceleration of Ions in Solar Flares During Magnetic Reconnection", "authors": [ "Kalman Knizhnik", "Marc Swisdak", "James F. Drake" ], "comment": "Revised based on reviewer's comments; text clarified and references added", "categories": [ "astro-ph.SR", "physics.plasm-ph", "physics.space-ph" ], "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 $\\alpha$ 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.", "revisions": [ { "version": "v2", "updated": "2011-10-10T15:58:58.000Z" } ], "analyses": { "keywords": [ "magnetic reconnection", "acceleration", "pickup behavior", "magnetic component perpendicular", "local magnetic field" ], "tags": [ "journal article" ], "publication": { "doi": "10.1088/2041-8205/743/2/L35", "journal": "The Astrophysical Journal", "year": 2011, "month": "Dec", "volume": 743, "number": 2 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 925809, "adsabs": "2011ApJ...743L..35K" } } }