On the influence of a novel Fisk-type heliospheric magnetic field model on the transport of Jovian electrons in the inner heliosphere

Abstract:

Modelling the transport of low energy (~MeV) cosmic ray electrons can lead to valuable insights as to the behaviour of the heliospheric magnetic field (HMF), due to the fact that the mean free path of these particles parallel to the HMF is significantly larger than their perpendicular mean free path, and that these particles experience little in the way of drift due to gradients/curvatures in the HMF and along the heliospheric current sheet. Jovian electrons are particularly suitable for such an endeavour, as they originate from a decentral source in the inner heliosphere. To this end, the transport of these electrons is studied using a 3D, ab initio particle transport code that incorporates recently derived theoretical expressions for electron diffusion coefficients, and utilizes as inputs for these transport coefficients turbulence quantities calculated using a two-component turbulence transport model. The effects of a novel Fisk-type field on the transport of these Jovian electrons are investigated, and compared with the effects of a standard Parker field.