Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station

AMS Collaboration

Research output: Contribution to journalArticlepeer-review

624 Scopus citations

Abstract

A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.

Original languageEnglish
Article number171103
JournalPhysical Review Letters
Volume114
Issue number17
DOIs
StatePublished - 30 Apr 2015

Fingerprint

Dive into the research topics of 'Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station'. Together they form a unique fingerprint.

Cite this