Jovian electrons in the inner Heliosphere: Modelling with a new source spectrum

Since the early seventies it is known that the Jovian magnetosphere is a source of low MeV electrons dominating the population in the inner Heliosphere. Therefor Jovian electrons have often been utilized as test particles to model charged particle transport and the corresponding transport parameters. It is evident that the results depend on both the assumed source spectrum as well as the general model setup. In our work we present an updated Jovian source spectrum based on flyby data and in agreement with measurements obtained at Earth orbit in the last 30 years. Furthermore we show first results of modelling spacecraft data via a stochastic differential equation (SDE) approach based on CUDA.