Measurement of the re-entrant all-electron spectrum by the High-Energy Particle Detector on board the China Seismo-Electromagnetic Satellite

Résumé fourni par la source

Interactions of primary cosmic rays with residual atmospheric nuclei produce secondary leptons through the decay chain of short-lived pions. Even though generated with an upward direction, a fraction of these secondary electrons and positrons is bent back downward towards the Earth by the geomagnetic field lines (hence they are called re-entrant albedo). In this paper, we report on a new measurement of the re-entrant all-electron differential flux in the energy range 10-100 MeV, performed by the High-Energy Particle Detector (HEPD-01) on board the China Seismo-Electromagnetic Satellite (CSES-01) in the near-equatorial region at about 500 km altitude between 2018 and 2022. This analysis focuses on the re-entrant all-electron spectrum that covers the low energy interval in a geographical region characterized by a substantial lack of recent experimental data and can contribute to a more accurate definition of secondary electron and positron population distribution and refine the radiation models in the Earth's magnetosphere

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.