Calculate asymptotic arrival directions and cutoff rigidities for vertically incident cosmic ray protons using Magnetocosmics (Desorgher, 2004) and plot on map in geographic coordinates.
Energy range =
RL to 20 GV. See geomagnetic field parameters:
IGRF/DGRF table
Enter year and/or additional magnetospheric data
Optional Parameters. Time is in UTC.
References
Desilets, D., 2021, Cutoff rigidity calculations for cosmic ray neutron sensors, Hydroinnova Technical Document 21-02, doi: 10.5281/zenodo.5396587.
Desorgher, L., 2004. MAGNETOCOSMICS Software User Manual. Physikalisches Institut University of Bern, http://cosray.unibe.ch/~laurent/magnetocosmics/doc/magnetocosmics_sum.pdf, Bern.
Flueckiger, E.O., Smart, D.F. and Shea, M.A., 1986. A procedure for estimating the changes in cosmic ray cutoff rigidities and asymptotic directions at low and middle latitudes during periods of enhanced geomagnetic activity. Journal of Geophysical Research: Space Physics, 91(A7), pp.7925-7930.