Particle Motion in Collapsing Magnetic Traps in Solar Flares. I. Kinematic Theory of Collapsing Magnetic Traps

P Giuliani, Thomas Neukirch, P Wood

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We present a model of collapsing magnetic traps in magnetic field configurations associated with solar flares. The model is based on a kinematic description of the magnetic field obeying the ideal Ohm's law. The dynamic evolution of the models is given in terms of a time-dependent transformation from Eulerian to Lagrangian coordinates. The transformation can be used to determine the corresponding flow field, the magnetic field, and the electric field from given initial conditions. The theory is formulated for translationally invariant situations, but a fully three-dimensional version is also given. The effect of various transformations and initial conditions is discussed with a view to calculating charged particle orbits in the given electromagnetic fields.

Original languageEnglish
Pages (from-to)636-646
Number of pages11
JournalAstrophysical Journal
Volume635
Issue number1
DOIs
Publication statusPublished - 10 Dec 2005

Keywords

  • acceleration of particles
  • MHD
  • sun : flares
  • sun : magnetic fields
  • sun : particle emission
  • 2-DIMENSIONAL MAGNETOHYDRODYNAMIC EQUATIONS
  • RECONNECTING CURRENT SHEETS
  • TIME-DEPENDENT SOLUTIONS
  • GEOSYNCHRONOUS OBSERVATIONS
  • ELECTRON ACCELERATION
  • FERMI ACCELERATION
  • WAVES
  • INJECTIONS
  • FIELD

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