Search
Now showing items 1-10 of 29
An ab initio approach to the heliospheric modulation of galactic cosmic rays
(North-West University, 2006)
In the present study we aim to further our understanding of charged particle transport in a magnetized medium. To this end, we perform direct numerical simulations of particle transport in a turbulent magnetic field. From ...
Modelling of galactic and jovian electrons in the heliosphere
(North-West University, 2004)
A three-dimensional (3D) steady-state electron modulation model based on Parker (1965) transport equation is applied to study the modelling of – 7 MeV galactic and Jovian electrons in the inner
heliosphere. The latter ...
Modelling of galactic cosmic ray electrons in the heliosphere
(North-West University, 2012)
The Voyager 1 spacecraft is now about 25 AU beyond the heliospheric termination shock and
soon it should encounter the outer boundary of the heliosphere, the heliopause. This is set to
be at 120 AU in the modulation model ...
Aspects of the modulation of cosmic rays in the outer heliosphere
(North-West University, 2006)
A time-dependent two-dimensional (2D) modulation model including drifts, the solar wind tennination shock (TS) with diffusive shock acceleration and a heliosheath based on the Parker (1965) transport equation is used to ...
Time–dependent modulation of cosmic rays in the outer heliosphere
(North-West University, 2013)
The time-dependent modulation of galactic cosmic rays in the heliosphere is studied by computing
intensities using a two-dimensional, time-dependent modulation model. The compound
approach of Ferreira and Potgieter (2004), ...
On the development and applications of a three–dimensional ab initio cosmic–ray modulation model
(North-West University, 2012)
A proper understanding of the effects of turbulence on the diffusion and drift of cosmic-rays in the heliosphere is imperative for a better understanding of cosmic-ray modulation. This study
presents an ab initio model ...
The effect of a Fisk-Parker hybrid magnetic field on cosmic rays in the heliosphere
(North-West University, 2005)
The existence of a Fisk-type heliospheric magnetic field (HMF) is one of the most debated questions in cosmic-ray modulation. Recently, Burger and Hitge [2004] developed a divergence-free Fisk-Parker hybrid magnetic field ...
A study of cosmic ray anisotropies in the heliosphere
(North-West University, 2006)
The three-dimensional (3D) steady-state electron modulation model of Ferreira (2002),
based on Parker (1965) transport equation, is used to study the modulation of the 7 MeV
galactic and Jovian electron anisotropies in ...
Cosmic ray propagation in the galaxy and the heliosphere
(North-West University, 2018)
The local interstellar spectra (LIS’s) for cosmic rays (CRs) are still not fully determined over all
energy ranges. Numerical modelling, such as with the GALPROP code, can be used to calculate
LIS’s for a wide set of CR ...
Modelling of cosmic ray modulation in the heliosphere by stochastic processes
(North-West University, 2013)
The transport of cosmic rays in the heliosphere is studied by making use of a newly developed
modulation model. This model employes stochastic differential equations to numerically solve
the relevant transport equation, ...