Precision measurement of the cosmic-ray electron and positron fluxes as a function of time and energy with the Alpha Magnetic Spectrometer on the International Space Station

TL;DR

This paper reports a precise measurement of cosmic-ray electron and positron fluxes over 6.5 years using AMS-02, revealing detailed temporal and energy-dependent variations in these high-energy particles.

Contribution

It provides the first detailed time-resolved measurements of electron and positron fluxes across a wide energy range with unprecedented accuracy.

Findings

Flux measurements cover 0.5 GeV to 1 TeV energy range.

Data includes 28.39 million electrons and 1.95 million positrons.

Flux variations are analyzed over 88 monthly periods.

Abstract

This thesis presents an analysis of the cosmic-ray electron and positron flux using the AMS-02 detector on the International Space Station as a function of time and energy. The time-averaged flux is integrated over 6.5 years of AMS-02 science data and provides the electron and positron flux with unprecedented accuracy, covering the energy range from 0.5 GeV to 1 TeV. In total 28.39 million events were identified as electrons and 1.95 million as positrons. For each of the 88 Bartels rotation periods (27 days), within the 6.5 years, an individual electron and positron flux is derived spanning the energy range from 1 - 50 GeV.