Statistical Properties of Dissipative MHD Accelerators

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dc.creatorArzner, Kaspar
dc.creatorVlahos, Loukas
dc.creatorKnaepen, Bernard
dc.creatorDenewet, Nicolas
dc.date2005-03-07
dc.date.accessioned2026-07-07T06:24:50Z
dc.date.available2026-07-07T06:24:50Z
dc.descriptionWe use exact orbit integration to investigate particle acceleration in a Gauss field proxy of magnetohydrodynamic (MHD) turbulence. Regions where the electric current exceeds a critical threshold are declared to be `dissipative' and endowed with super-Dreicer electric field ${\bf E}_Ω= η{\bf j}$. In this environment, test particles (electrons) are traced and their acceleration to relativistic energies is studied. As a main result we find that acceleration mostly takes place within the dissipation regions, and that the momentum increments have heavy (non-Gaussian) tails, while the waiting times between the dissipation regions are approximately exponentially distributed with intensity proportional to the particle velocity. No correlation between the momentum increment and the momentum itself is found. Our numerical results suggest an acceleration scenario with ballistic transport between independent `black box' accelerators.
dc.description5 figures, to appear in Springer Lectrue Notes in Computer Science
dc.identifierhttps://arxiv.org/abs/astro-ph/0503147
dc.identifierhttp://arxiv.org/abs/astro-ph/0503147
dc.identifierLect.Notes Comput.Sci. 3723 (2005) 538-545
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96678
dc.subjectAstrophysics
dc.titleStatistical Properties of Dissipative MHD Accelerators
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