Cosmic-ray modulation models: Predicting cosmic-ray intensities throughout the heliosphere
- Paper number
IAC-11,D5,3,7,x11955
- Author
Prof.Dr. Renier Burger, North-West University, South Africa
- Year
2011
- Abstract
Numerical models for the modulation of galactic cosmic rays vary from very simple spherically symmetric ones that use ad hoc diffusion coefficients, to sophisticated ab initio time-dependent fully three-dimensional models. The latter include a diffusion tensor based on current knowledge of parallel- and perpendicular diffusion, and on particle drift, and have a turbulence transport model as input. Our goal is to understand how the relevant microphysics eventually determine the cosmic-ray intensity at any given time and position in the heliosphere. I will review some of the latest developments in modulation models and illustrate how e.g. particle drifts may play a role in determining long-term radiation exposure in the inner heliosphere.
- Abstract document
- Manuscript document
(absent)