Cosmic Ray Modulation: Improving the Agreement Between Modelling and Observations

Details Cosmic Ray Modulation: Improving the Agreement Between Modelling and Observations Cosmic Ray Modulation: Improving the Agreement Between Modelling and Observations

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh31a1172m&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH31A-1172

Physics

7859 Transport Processes, 7863 Turbulence, 2104 Cosmic Rays

Scientific paper

We compare the effects of two different models for perpendicular diffusion on the modulation of galactic cosmic ray protons in the heliosphere during solar minimum conditions. These two models correspond to the newly developed non-linear guiding center (NLGC) theory [Matthaeus et al., 2003] and the theory of Bieber and Matthaeus [1997] (known as BAM in several of our earlier publications). A steady-state two-dimensional numerical modulation model is used in this ab initio study, which incorporates a state-of-the-art turbulence model. Factors relevant to an improvement in the agreement between the ab initio modulation model and cosmic ray observations are discussed.

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