Particle events refer to phenomena involving the acceleration and subsequent release of highly energetic particles, such as protons, electrons, and other atomic nuclei, typically from sources such as the sun or other celestial bodies. These events can have a variety of impacts on the Earth's space environment, including causing geomagnetic storms, disrupting communication and navigation systems, and posing potential hazards to astronauts and spacecraft. Scientists study particle events to better understand their causes, effects, and potential for predicting and mitigating their impacts on space weather. Research in this area often involves measurements of particle fluxes, magnetic fields, and other parameters using satellite observations, ground-based instruments, and theoretical models.