UNIGE document Scientific Article
previous document  unige:137447  next document
add to browser collection
Title

Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer

CollaborationWith : Bourquin, Maurice / Chen, Yao / Liu, Zhen / Paniccia, Mercedes / Rapin, Divic Jean / Wei, Jiahui
Published in Physical Review Letters. 2020, vol. 124, no. 21
Abstract We report the observation of new properties of primary cosmic rays, neon (Ne), magnesium (Mg), and silicon (Si), measured in the rigidity range 2.15 GV to 3.0 TV with 1.8 million  Ne, 2.2 million  Mg, and 1.6 million  Si nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. The Ne and Mg spectra have identical rigidity dependence above 3.65 GV. The three spectra have identical rigidity dependence above 86.5 GV, deviate from a single power law above 200 GV, and harden in an identical way. Unexpectedly, above 86.5 GV the rigidity dependence of primary cosmic rays Ne, Mg, and Si spectra is different from the rigidity dependence of primary cosmic rays He, C, and O. This shows that the Ne, Mg, and Si and He, C, and O are two different classes of primary cosmic rays.
Keywords Cosmic-ray physicsCosmic-ray primary nucleiCosmic-ray propagationCosmic-ray accelerationCosmic-ray sourcesCosmic-ray siliconCosmic-ray magnesiumCosmic-ray neonAlhpa magnetic spectrometerInternational space stationAstroparticle physics in spaceAMS-02
Identifiers
Full text
Structures
Citation
(ISO format)
AMS COLLABORATION. Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer. In: Physical Review Letters, 2020, vol. 124, n° 21. doi: 10.1103/PhysRevLett.124.211102 https://archive-ouverte.unige.ch/unige:137447

36 hits

13 downloads

Update

Deposited on : 2020-06-22

Export document
Format :
Citation style :