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

Alpha Magnetic Spectrometer - AMS; Huilin Chen; M. Vecchi; L. Q. Wang

doi:10.1103/PhysRevLett.114.171103

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

Alpha Magnetic Spectrometer - AMS
, Huilin Chen
, M. Vecchi
, L. Q. Wang

Research output: Contribution to journal › Article › Academic › peer-review

1009 Citations (Scopus)

18 Downloads (Pure)

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 language	English
Article number	171103
Number of pages	9
Journal	Physical Review Letters
Volume	114
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.114.171103
Publication status	Published - May-2015
Externally published	Yes

Keywords

Cosmic rays
Neutrino muon pion and other elementary particle detectors
cosmic ray detectors
Neutrino muon pion and other elementary particles
cosmic rays
Composition energy spectra and interactions

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10.1103/PhysRevLett.114.171103Licence: CC BY

Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TVFinal publisher's version, 368 KBLicence: CC BY

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title = "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",

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.",

keywords = "Cosmic rays, Neutrino muon pion and other elementary particle detectors, cosmic ray detectors, Neutrino muon pion and other elementary particles, cosmic rays, Composition energy spectra and interactions",

author = "\{Alpha Magnetic Spectrometer - AMS\} and M. Aguilar and D. Aisa and B. Alpat and A. Alvino and G. Ambrosi and Huilin Chen and M. Vecchi and Wang, \{L. Q.\}",

year = "2015",

month = may,

doi = "10.1103/PhysRevLett.114.171103",

language = "English",

volume = "114",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

number = "17",

}

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. / Alpha Magnetic Spectrometer - AMS ; Chen, Huilin ; Vecchi, M. et al.
In: Physical Review Letters, Vol. 114, No. 17, 171103, 05.2015.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - 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

AU - Alpha Magnetic Spectrometer - AMS

AU - Aguilar, M.

AU - Aisa, D.

AU - Alpat, B.

AU - Alvino, A.

AU - Ambrosi, G.

AU - Chen, Huilin

AU - Vecchi, M.

AU - Wang, L. Q.

PY - 2015/5

Y1 - 2015/5

N2 - 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.

AB - 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.

KW - Cosmic rays

KW - Neutrino muon pion and other elementary particle detectors

KW - cosmic ray detectors

KW - Neutrino muon pion and other elementary particles

KW - cosmic rays

KW - Composition energy spectra and interactions

U2 - 10.1103/PhysRevLett.114.171103

DO - 10.1103/PhysRevLett.114.171103

M3 - Article

SN - 0031-9007

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M1 - 171103

ER -

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

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