A New Field Line Advection Model for Solar Particle Acceleration

Details A New Field Line Advection Model for Solar Particle Acceleration A New Field Line Advection Model for Solar Particle Acceleration

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...616l.171s&link_type=abstract

The Astrophysical Journal, Volume 616, Issue 2, pp. L171-L174.

Astronomy and Astrophysics

Astronomy

21

Acceleration Of Particles, Magnetohydrodynamics: Mhd, Shock Waves, Sun: Coronal Mass Ejections (Cmes), Sun: Magnetic Fields

Scientific paper

The diffusive acceleration of solar protons at a shock wave driven by a realistic coronal mass ejection is modeled using a new field line advection model for particle acceleration coupled with a global MHD code. The new model described in this Letter includes effects important for the particle acceleration and transport, by means of diffusive shock acceleration, and employs Lagrangian meshes. We performed a frequent dynamical coupling between two numerical codes in order to account for the time-dependent history of an evolving shock wave driven by a solar eruption. The numerical results discussed here demonstrate that this mechanism can account for the production of high-energy solar protons observed during the early stages of gradual events.

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