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Electromagnetic energy conversion in downstream fronts from three dimensional kinetic reconnection
KTH, School of Computer Science and Communication (CSC), High Performance Computing and Visualization (HPCViz).ORCID iD: 0000-0003-0639-0639
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2014 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 21, no 5, 055702- p.Article in journal (Refereed) Published
Abstract [en]

The electromagnetic energy equation is analyzed term by term in a 3D simulation of kinetic reconnection previously reported by Vapirev et al. [J. Geophys. Res.: Space Phys. 118, 1435 (2013)]. The evolution presents the usual 2D-like topological structures caused by an initial perturbation independent of the third dimension. However, downstream of the reconnection site, where the jetting plasma encounters the yet unperturbed pre-existing plasma, a downstream front is formed and made unstable by the strong density gradient and the unfavorable local acceleration field. The energy exchange between plasma and fields is most intense at the instability, reaching several pW/m(3), alternating between load (energy going from fields to particles) and generator (energy going from particles to fields) regions. Energy exchange is instead purely that of a load at the reconnection site itself in a region focused around the x-line and elongated along the separatrix surfaces. Poynting fluxes are generated at all energy exchange regions and travel away from the reconnection site transporting an energy signal of the order of about S approximate to 10(-3)W/m(2). (C) 2014 AIP Publishing LLC.

Place, publisher, year, edition, pages
2014. Vol. 21, no 5, 055702- p.
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Computer Science
URN: urn:nbn:se:kth:diva-147963DOI: 10.1063/1.4872028ISI: 000337107200085ScopusID: 2-s2.0-84899493628OAI: diva2:733710

QC 20140711

Available from: 2014-07-11 Created: 2014-07-10 Last updated: 2014-07-11Bibliographically approved

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Markidis, Stefano
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