We implemented a 2D Monte Carlo model to simulate the solar modulation of galactic cosmic rays. The model is based on the Parker’s transport equation which contains diffusion, convection, particle drift and energy loss. Following the evolution in time of the solar activity, we are able to modulate a local interstellar spectrum (LIS), that we assumed isotropic beyond the termination shock, down to the Earth position inside the heliosphere. In this work we focused our attention to the cosmic ray positron fraction at energy below 10 GeV, showing how the particle drift processes could explain different results for AMS-01 and PAMELA. We compare our modulated spectra with observations at Earth, and then make a prediction of the cosmic ray positron fraction for the AMS-02 experiment.
Della Torre, S., Bobik, P., Boschini, M., Consolandi, C., Gervasi, M., Grandi, D., et al. (2012). Effects of solar modulation on the cosmic ray positron fraction. ADVANCES IN SPACE RESEARCH, 49(11), 1587-1592.
Citazione: | Della Torre, S., Bobik, P., Boschini, M., Consolandi, C., Gervasi, M., Grandi, D., et al. (2012). Effects of solar modulation on the cosmic ray positron fraction. ADVANCES IN SPACE RESEARCH, 49(11), 1587-1592. |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Presenza di un coautore afferente ad Istituzioni straniere: | Si |
Titolo: | Effects of solar modulation on the cosmic ray positron fraction |
Autori: | Della Torre, S; Bobik, P; Boschini, M; Consolandi, C; Gervasi, M; Grandi, D; Kudela, K; Pensotti, S; Rancoita, P; Rozza, D; Tacconi, M |
Autori: | |
Data di pubblicazione: | 2012 |
Lingua: | English |
Rivista: | ADVANCES IN SPACE RESEARCH |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.asr.2012.02.017 |
Appare nelle tipologie: | 01 - Articolo su rivista |