Modelling Anomalous Cosmic Ray Spectra during Sucesive Solar Minima

Details Modelling Anomalous Cosmic Ray Spectra during Sucesive Solar Minima Modelling Anomalous Cosmic Ray Spectra during Sucesive Solar Minima

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsh41a..16c&link_type=abstract

American Geophysical Union, Spring Meeting 2004, abstract #SH41A-16

Physics

2104 Cosmic Rays, 2124 Heliopause And Solar Wind Termination, 2134 Interplanetary Magnetic Fields, 2194 Instruments And Techniques, 2753 Numerical Modeling

Scientific paper

This contribution analyzes the anomalous cosmic ray (ACR) modulation through the heliosphere during the solar minimum conditions for 1977/1997 positive and 1987 negative drift periods. We use a time-dependent two-dimensional model of the transport particle equation, that takes into account all physical processes of the modulation, including the effects of the solar wind termination shock and the heliosheath. The best set of diffusion coefficients that fits the observed ACR spectra in the inner as well in the outer heliosphere for H and He, is presented. These parameters are compared with those inferred from galactic cosmic ray spectra. The implications of our results are discussed.

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