Phenomenological models of galactic Cosmic Ray transport

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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.

Course Features

  • Lectures 0
  • Quizzes 0
  • Duration 50 hours
  • Skill level All levels
  • Language English
  • Students 0
  • Assessments Yes
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I am currently a researcher in the Astroparticle Physics department of GSSI where I previously was a post doc with a Marie Skłodowska-Curie Fellowship. My career developed at several institutions, I completed my PhD in October 2010 at SISSA and, before to join GSSI, I was a postdoc at NAOC in Bejing and at the Institue for Theoretical Physics of Hamburg University where I worked on topics including particle physics phenomenology, astrophysical signatures of dark matter, and physics of the Early Universe. In the past few years I focused my interests on investigating the generation and transport of energetic cosmic-ray particles with particular emphasis on gamma-ray signatures and the feedback with the interstellar environments. To this aim, I have been developing numerical approaches to investigate the transport of cosmic rays in the Galaxy and testing my models against multi-messenger observations of nuclei, leptons, diffuse gamma-rays and neutrinos.

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