Speaker
Description
The Forbush Decrease (FD) is characterized by a sharp decline followed by a gradual
recovery in the intensity of low-energy cosmic rays. This phenomenon is thought to
be caused by disruptions in the heliosphere caused by solar events, such as coronal
mass ejections (CMEs). The Dark Matter Particle Explorer (DAMPE), a
satellite-based experiment designed for detecting the cosmic radiation, including
electrons plus positrons, provides a unique platform to investigate FDs using these
particles, which have seldom been studied in detail before. In this study, the DAMPE electron plus positron data are analyzed with the aim of
investigating the properties of eight FDs since the mission start in December 2015
until 2024. An explanation on energy correlation with FD recover time is also
proposed. In order to address the impact of CMEs on cosmic ray propagation within
the solar system, the stochastic differential equation method is utilized. This approach
allows for an accurate modeling of the cosmic ray transport under disturbed
conditions. Finally, the model predictions are compared with observational data to
validate the results.
| Collaboration(s) | DAMPE collobration |
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