Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station

AMS Collaboration

doi:10.1103/PhysRevLett.119.251101

Scientific article

English

Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station

ContributorsAMS Collaboration

CollaboratorsAzzarello, Philipp; Bourquin, Maurice; Cadoux, Franck; Leluc, Catherine; Li, Yang; Paniccia, Mercedes

; Perrina, Chiara; Pohl, Martin; Rapin, Divic Jean; Vitillo, Stefania; Wu, Xin

Published inPhysical Review Letters, vol. 119, no. 25

Publication date2017

Abstract

We report the observation of new properties of primary cosmic rays He, C, and O measured in the rigidity (momentum/charge) range 2 GV to 3 TV with 90×10^6 helium, 8.4×10^6 carbon, and 7.0×10^6 oxygen nuclei collected by the Alpha Magnetic Spectrometer (AMS) during the first five years of operation. Above 60 GV, these three spectra have identical rigidity dependence. They all deviate from a single power law above 200 GV and harden in an identical way.

Keywords

Cosmic Rays
Primary cosmic-rays
Helium
Carbon
Oxygen
Spectral features
International Space Station
Alpha Magnetic Spectrometer

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

AMS Collaboration. Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station. In: Physical Review Letters, 2017, vol. 119, n° 25. doi: 10.1103/PhysRevLett.119.251101