Streaming of Galactic Cosmic Rays in the Heliosphere and the Role of Drifts
Abstract
During their transport through the heliosphere, galactic cosmic rays suffer from scattering on magnetic inhomogenities, from convection and adiabatic cooling by the solar wind. In addition to these basic mechanisms, also drifts (gradient, curvature and drift along the wavy heliospheric current sheet) affect the transport of cosmic rays. All these effects are known as the solar modulation of cosmic rays. We have recently presented a new model of the transport of galactic cosmic rays in a 2D axisymmetric heliosphere, which includes the above mentioned effects. Using this model, we can compare the effects of different modulation mechanisms in the model and, in particular, study the role of drifts. We also study the streaming of galactic cosmic rays inside the heliosphere, their modulated spectra, the time particles spend in the heliosphere and the modulation function.
- Publication:
-
35th COSPAR Scientific Assembly
- Pub Date:
- 2004
- Bibcode:
- 2004cosp...35.2250A