Modeling the time and energy behavior of the GCR intensity in the periods of low activity around the last three solar minima

TL;DR

This paper models the time and energy variations of galactic cosmic ray (GCR) intensity near Earth during low solar activity periods around the last three solar minima, using a simple heliospheric modulation model.

Contribution

It introduces a decomposition method to analyze GCR intensity features into main physical processes, enhancing understanding of GCR modulation mechanisms.

Findings

GCR intensity features are explained by diffusion, adiabatic losses, convection, and drifts.

The model successfully reproduces observed GCR behavior during solar minima.

Partial intensities reveal dominant processes at different energy ranges.

Abstract

Using the simple model for the description of the GCR modulation in the heliosphere and the sets of parameters discussed in the accompanying paper we model some features of the time and energy behavior of the GCR intensity near the Earth observed during periods of low solar activity around three last solar minima. In order to understand the mechanisms underlying these features in the GCR behavior, we use the suggested earlier decomposition of the calculated intensity into the partial intensities corresponding to the main processes (diffusion, adiabatic losses, convection and drifts).