12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room F(201/202/203/204)

[SH039] Perpendicular Diffusion of Solar Energetic Particles: Model Results and Implications for Electrons


  • Nicholas Eugene ENGELBRECHT

Primary authors


  • Nicholas Eugene ENGELBRECHT (Center for Space Research, North West University, South Africa)
  • Nina DRESING (Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Germany)


The processes responsible for the effective longitudinal transport of solar energetic particles (SEPs) are still not completely understood. We address this issue by simulating SEP electron propagation using a spatially 2D transport model that includes perpendicular diffusion. By implementing, as far as possible, theoretically derived forms of the transport (diffusion) coefficients, we compare our results in a qualitative manner to recent observations at energies of 55– 105 keV, focusing on the longitudinal distribution of the peak intensity, the maximum anisotropy, and the onset time. We illustrate the effects of perpendicular diffusion on the model solutions and discuss the viability of this process as a dominant mechanism by which SEPs are transported in longitude.