The Alpha Magnetic Spectrometer (AMS) has performed new measurements on the temporal evolution of the proton, helium, electron, and positron fluxes in cosmic rays. These data are revealing fine details on the cosmic-ray flux evolution in connection with changing solar activity, that can bring new insights to our understanding of the so-called solar modulation effect. In this conference, I will...
Galactic cosmic rays (GCRs) are affected by solar modulation while they propagate throughout the heliosphere. The study of the time variation of the GCR spectrum observed at Earth can shed light on the underlying physical processes, specifically diffusion and particle drifts. The AMS-02 experiment on board the International Space Station measured with very high accuracy the time variation of...
During the first 5 years of operations on board of the International Space Station, from May 2011 to May 2016, AMS has detected sudden reductions of the cosmic ray intensity —the so-called Forbush decrease events. The method used to identify the reductions of the proton flux is described. The detailed time evolution of selected events is presented in different rigidity bins.
This preliminary study looks at the modulation of cosmic rays (Forbush decrease) caused by Coronoal Mass ejections. Forbush decreases from 2001 through 2016 are considered using data from neutron monitors. The study considers correlation of modulation magnitude (and recovery) with in situ solar wind measurements and qualitative description of the recovery period through fitting functions to NM...
