Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....7.4281d&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
1
Scientific paper
We have developed a Geant4 application to simulate the propagation of cosmic rays through the Earth's magnetosphere. The application computes the motion of charged particles through advanced magnetospheric magnetic field models such as the Tsyganenko 2001 model. It allows to determine cosmic ray cutoff rigidities and asymptotic directions of incidence for user-defined observing positions, directions, and times. By using the new generation of Tsyganenko models, we can analyse the variation of cutoff rigidities and asymptotic directions during magnetic storms as function of the Dst index and of the solar wind dynamic pressure. The paper describes the application, in particular its visualisation potential, and simulation results. Acknowledgments. This work was supported by the Swiss National Science Foundation, grant 20-67092.01 and by the QINETIQ contract CU009-0000028872 in the frame of the ESA/ESTEC SEPTIMESS project.
Buetikofer R.
Desorgher Laurent
Flueckiger Erwin O.
Moser Michael R.
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