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Cosmic ray transport modelling in the heliosphere and the Galaxy

Project: 
In recent years quality observational data for cosmic rays have become available for a large array of particles. Both the Voyager 1 and 2 spacecraft now measure interstellar cosmic rays fluxes, while high accuracy cosmic ray experiments are conducted with Earth orbiting satellites and polar balloon flights. This wealth of cosmic ray observations have made numerical models more important than ever in helping explain the physical processes behind the origins and transport of cosmic rays in space. This project will introduce the basics of cosmic ray transport theory and how it has been implemented in two numerical models. The first, a galactic propagation model, computes the cosmic ray intensity at the heliosphere's position in the Galaxy. The second, a solar modulation model, then computes the cosmic ray transport from the edge of the heliosphere down to the Earth. A small scale parameter study with both models will be conducted, with the aim of improving on similar studies done with more simplistic models. The project will start out with computing electron and proton spectra, and then move on to rarely studied heavier ions, such as Nitrogen, Neon, Iron etc. Comparisons with Voyager, satellite and balloon flight observations will then be made.
Node This Project Is Offered On: 
(NWU)

Supervisor

Driaan
Bisschoff

Co-Supervisor

Stefan
Ferreira
Research Area: 
Space Physics


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