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dc.contributor.authorHeerikhuisen, J.
dc.contributor.authorLitvinenko, Yuri E.
dc.contributor.authorCraig, Ian J.D.
dc.date.accessioned2008-11-18T02:08:20Z
dc.date.available2008-11-18T02:08:20Z
dc.date.issued2002-02
dc.identifier.citationHeerikhuisen, J., Litvinenko, Y. E. & Craig, I. J. D. (2002). Proton acceleration in analytic reconnecting current sheets. The Astrophysical Journal, 566(1), 512- 520.en_US
dc.identifier.urihttps://hdl.handle.net/10289/1373
dc.description.abstractParticle acceleration provides an important signature for the magnetic collapse that accompanies a solar flare. Most particle acceleration studies, however, invoke magnetic and electric field models that are analytically convenient rather than solutions of the governing magnetohydrodynamic equations. In this paper a self-consistent magnetic reconnection solution is employed to investigate proton orbits, energy gains, and acceleration timescales for proton acceleration in solar flares. The magnetic field configuration is derived from the analytic reconnection solution of Craig and Henton. For the physically realistic case in which magnetic pressure of the current sheet is limited at small resistivities, the model contains a single free parameter that specifies the shear of the velocity field. It is shown that in the absence of losses, the field produces particle acceleration spectra characteristic of magnetic X-points. Specifically, the energy distribution approximates a power law ~ξ-3/2 nonrelativistically, but steepens slightly at the higher energies. Using realistic values of the “effective” resistivity, we obtain energies and acceleration times that fall within the range of observational data for proton acceleration in the solar corona.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.relation.urihttp://www.journals.uchicago.edu/doi/abs/10.1086/337957en_US
dc.rightsThis article has been published in the Astrophysical Journal. Copyright 2002 The American Astronomical Society.en_US
dc.subjectacceleration of particles—MHD—Sunen_US
dc.subjectflares—Sunen_US
dc.subjectmagnetic fields—Sunen_US
dc.subjectparticle emissionen_US
dc.titleProton acceleration in analytic reconnecting current sheetsen_US
dc.typeJournal Articleen_US
dc.identifier.doi10.1086/337957en_US
dc.relation.isPartOfAstrophysical Journalen_NZ
pubs.begin-page512en_NZ
pubs.editionFebruaryen_NZ
pubs.elements-id27352
pubs.end-page520en_NZ
pubs.issue1 Ien_NZ
pubs.volume566en_NZ


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