Measurement of daily proton flux temporal evolution with AMS-02 on the ISS.

Faldi F. per la AMS-02 Collaboration
  Venerdì 16/09   09:00 - 13:30   Aula T - Caterina Scarpellini   III - Astrofisica   Presentazione
The Alpha Magnetic Spectrometer (AMS-02) is a high-energy particle detector designed to precisely study the properties of cosmic rays from GV to TV rigidities in space. The experiment is currently operating in the International Space Station (ISS) since its installation in May 19, 2011 and has continuously collected cosmic rays since then. Here we present the precision measurement of the monthly and daily proton fluxes by AMS-02 on the ISS using data collected from May 20, 2011 to October 29, 2019, in the rigidity interval from 1 to $100 {GV}$. We observed that the proton fluxes exhibit distinct variations and periodicities emerging at the various scales of time and rigidity. These results are of particular interest for the study of transient solar events, such as flares, coronal mass ejections, and their influence on the transport of cosmic rays in interplanetary space.