Speaker
Dr
Cristina Consolandi
(University of Hawaii Physics and Astronomy department)
Description
The Alpha Magnetic Spectrometer (AMS-02) is a high energy particle detector designed to study origin and nature of cosmic rays up to a few TV from space. It was installed on the International Space Station (ISS) on May 19, 2011.
During the first two years of operation AMS-02
performed precise measurements of the proton flux. In the low rigidity range, from 1 GV to 20 GV, the proton flux was daily measured with a statistical error less than 1%. In the same rigidity range a gradual decrease due to Solar modulation effects and transit variations due to Solar Flares and Coronal Mass Ejection were also observed.
In the rigidity range from 20 GV up to 100 GV instead, AMS data show no drastic variation and the results are consistent with other experiments. Above 100 GV, AMS proton flux exhibits a single power low behavior with no fine structures nor brakes.
Primary author
Dr
Cristina Consolandi
(University of Hawaii Physics and Astronomy department)
