Phenomenological models of galactic Cosmic Ray transport
In these lectures I will summarize the main properties of the observed cosmic-ray spectrum up to PeV energy, in terms of spectral features, energy density, chemical composition and anisotropy and I will illustrate the main aspects of the current paradigm for the origin of Galactic CRs. I will then start from the diffusive-advective transport equation and I will describe different approaches to solve this equation for some interesting cases to learn from.
In particular I will discuss the weighted-slab model which nicely describe nuclei propagation and I will confront the results with the ones in the quaint leaky-box model. The case of high-energy electrons, where energy losses becomes severe, will be considered in terms of the green function formalism and a statistical approach will be developed.
I will compare the predictions obtained with these approaches with the observed cosmic-ray fluxes and compositions in some limiting cases.
- Lectures 0
- Quizzes 0
- Duration 50 hours
- Skill level All levels
- Language English
- Students 0
- Assessments Yes