Speaker
Description
Coronal Mass Ejections (CMEs) are rapid energy-release events in which a large amount of plasma from the solar corona is ejected into the heliosphere. Some CMEs, if sufficiently intense and appropriately directed, can propagate into interplanetary space. Research on ICMEs primarily relies on direct observations of solar energetic particles, with corresponding particle energies typically below GeV. Because although cosmic rays near TeV energies are in principle also perturbed by ICMEs, such perturbations are generally difficult to detect at observable levels in terms of energy spectrum and flux intensity. However, Short-term anisotropy observations provide a promising approach to investigating ICME-induced perturbations at TeV energies. In this report, we present the effects of coronal mass ejections on anisotropy in the TeV energy band. We focus on the correlation between anisotropy variations induced by different structures of ICMEs upon their arrival at Earth and physical parameters such as the magnetic field and solar wind. Additionally, we demonstrate the use of a dipole model to describe the temporal evolution of the anisotropy disturbance upon its arrival at Earth.
