Jul 12 – 23, 2021
Europe/Berlin timezone


Jul 14, 2021, 12:00 PM
1h 30m


Talk SH | Solar & Heliospheric Discussion


Riccardo Munini


In recent years, several new measurements of the antiproton component of the cosmic radiation have become available. These measurements have improved significantly the existing statistics, extending the explored energy region from few tens of MeV up to hundreds of GeV. These measurements are particularly relevant to understand the propagation of cosmic rays in the Galaxy and in the investigation of the nature of Dark Matter. However, an unambiguous interpretation of the experimental data requires a proper reconstruction of the very Local Interstellar Spectrum (LIS) of cosmic-ray antiprotons. Since these measurements are performed deep inside the heliosphere, solar modulation as a highly time and space dependent process which follows the 11-year solar activity cycle, has to be taken into account appropriately. In this work, using a 3D state-of-art solar modulation model, a new LIS for cosmic-ray antiprotons and its related uncertainties are presented. This LIS is derived to match, when modulated, the data sets from AMS02, PAMELA and BESS.

Subcategory Theoretical Methods

Primary authors

Riccardo Munini Dr Mirko Boezio (INFN, Sezione di Trieste, I-34149 Trieste, Italy) Donald Ngobeni (North-West University) Dr Driaan Bisschoff (Centre for Space Research, North-West University, Potchefstroom, South Africa) Prof. Marius Potgieter (Retired: FS4, Potchefstroom, South Africa) Dr O.P.M Aslam (Centre for Space Research, North-West University, Potchefstroom, South Africa) Mr Nadir Marcelli (INFN, Sezione di Rome, I-00133 Rome, Italy)

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