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Modeling a Single SEP Event from Multiple Vantage Points Using the iPATH Model

AuthorHu, Junxiang; Li, Gang; Fu, Shuai; Zank, Gary; Ao, Xianzhi;
Keywordsparker solar probe; shock waves; Solar Probe Plus; Sun: coronal mass ejections: CMEs; Sun: heliosphere

Using the recently extended 2D improved Particle Acceleration and Transport in the Heliosphere (iPATH) model, we model an example gradual solar energetic particle event as observed at multiple locations. Protons and ions that are energized via the diffusive shock acceleration mechanism are followed at a 2D coronal mass ejection-driven shock where the shock geometry varies across the shock front. The subsequent transport of energetic particles, including cross-field diffusion, is modeled by a Monte Carlo code that is based on a stochastic differential equation method. Time intensity profiles and particle spectra at multiple locations and different radial distances, separated in longitudes, are presented. The results shown here are relevant to the upcoming Parker Solar Probe mission.

Year of Publication2018
JournalThe Astrophysical Journal
Number of PagesL19
Date Published02/2018