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Title Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer
Author(s) AMS Collaboration  Mostra tots els 236 autors
Publication 2021
Number of pages 8
In: Phys. Rev. Lett. 126 (2021) 041104
DOI 10.1103/PhysRevLett.126.041104
Subject category Astrophysics and Astronomy ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment AMS
Abstract We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62×106 iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.
Copyright/License © 2021-2024 authors (License: CC-BY-4.0)

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 Registre creat el 2021-02-09, darrera modificació el 2021-02-09


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