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UNIPG GCRs long-term modulation
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.. contents:: The tiny table of contents

The software is aimed at implementing a physical model for the so-called solar modulation effect, that is, the long-term influence of solar activity on the intensity and energy spectra of Galactic cosmic rays (GCRs). The physical mechanisms governing solar modulation are diffusion, convection, adiabatic energy losses and drifts of energetic charged particles through the solar wind and its embedded magnetic field. The interplay among the various mechanisms at the different timescales and energy depends on the level of solar activity and interplanetary conditions. The model is based on numerical integration of differential equation for the transport of Galactic cosmic rays (GCR) in the heliosphere. The model output is the differential flux intensity J=J(t,E), evaluated near-Earth, which is defined as the number of GCR particles per unit of time, solid angle, area, and energy. Such an output is provided as a time series within a user-specified range [t_1,t_2], or for a given input epoch t. The input options to be specified by the user may include: an arbitrary past epoch t, the GCR particle type (e.g. proton, helium, light nuclei), and the value of kinetic energy E (between 100 MeV and 100 GeV).

**Providers**:

ND

| **Product Type**: software

| **Status**: Active

| **Creation date**: 2022-05-03T17:05:10+02:00

| **Last Update**: 2023-10-01T12:00:00+02:00

Data Description
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| **Data type**: ND

| **Data formats**: ND

| **Sample**: ND

Capabilities
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- ext2220.1: Standard Visualisation: Web GUI

