The anisotropies of Galactic cosmic rays: 3-Dimensional modeling

J. Kóta, J. R. Jokipii

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We report on model calculations for the anisotropies of galactic cosmic rays at the orbit of the Earth. We consider the 5 - 25 GV range where the diffusion approximation is still applicable. The predicted ecliptic and North-South components of the anisotropy in various 2-dimensional (2-D) and 3-dimensional (3-D) models are discussed. Our 3-D numerical code, including large-scale particle drifts in a model heliosphere with a wavy current sheet and corotating interaction regions (CIRs), is extended to calculate anisotropies. Simulation results obtained for the two opposite magnetic cycles are presented for 3-D models with uniform solar wind speed as well as for those with CIRs included. Recurrent 27-day variations are discussed.

Original languageEnglish (US)
Pages (from-to)607-612
Number of pages6
JournalAdvances in Space Research
Issue number3
StatePublished - 2001

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)


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