HelMod: A Comprehensive Treatment of the Cosmic Ray Transport Through the Heliosphere

S. Della Torre, M. Gervasi, D. Grandi, G. Johannesson, G. La Vacca, N. Masi, I. V. Moskalenko, E. Orlando, T. A. Porter, L. Quadrani, P. G. Rancoita, D. Rozza

Published 2016-12-26Version 1

HelMod is a code evaluating the transport of Galactic cosmic rays through the inner heliosphere down to Earth. It is based on a 2-D Monte Carlo approach and includes a general description of the symmetric and antisymmetric parts of the diffusion tensor, thus, properly treating the particle drift effects. The model has been tuned in order to fit the data observed outside the ecliptic plane at several distances from the Earth and the spectra observed near the Earth for both, high and low solar activity levels. A stand-alone python module, fully compatible with GalProp, was developed for a comprehensive calculation of solar modulation effects, resulting in a newly suggested set of local interstellar spectra.