Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

G. H. Choi; E. S. Seo; S. Aggarwal; Y. Amare; D. Angelaszek; D. P. Bowman; Y. C. Chen; M. Copley; L. Derome; L. Eraud; C. Falana; A. Gerrety; J. H. Han; H. G. Huh; A. Haque; Y. S. Hwang; H. J. Hyun; H. B. Jeon; J. A. Jeon; S. Jeong; S. C. Kang; H. J. Kim; K. C. Kim; M. H. Kim; H. Y. Lee; J. Lee; M. H. Lee; L. Lu; J. P. Lundquist; L. Lutz; A. Menchaca-Rocha; O. Ofoha; H. Park; I. H. Park; J. M. Park; N. Picot-Clemente; R. Scrandis; J. R. Smith; R. Takeishi; N. Vedenkin; P. Walpole; R. P. Weinmann; H. Wu; J. Wu; Z. Yin; Y. S. Yoon; H. G. Zhang

doi:10.3847/1538-4357/ac9d2c

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

G. H. Choi
, E. S. Seo
, S. Aggarwal
, Y. Amare
, D. Angelaszek
, D. P. Bowman
, Y. C. Chen
, M. Copley
, L. Derome
, L. Eraud
, C. Falana
, A. Gerrety
, J. H. Han
, H. G. Huh
, A. Haque
, Y. S. Hwang
, H. J. Hyun
, H. B. Jeon
, J. A. Jeon
, S. Jeong

S. C. Kang, H. J. Kim, K. C. Kim, M. H. Kim, H. Y. Lee, J. Lee, M. H. Lee, L. Lu, J. P. Lundquist, L. Lutz, A. Menchaca-Rocha, O. Ofoha, H. Park, I. H. Park, J. M. Park, N. Picot-Clemente, R. Scrandis, J. R. Smith, R. Takeishi, N. Vedenkin, P. Walpole, R. P. Weinmann, H. Wu, J. Wu, Z. Yin, Y. S. Yoon, H. G. Zhang

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

31 Scopus citations

Abstract

The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from 2017 August to 2019 February. We report the energy spectrum of cosmic-ray protons from the ISS-CREAM experiment at energies from 1.60 × 10³ to 6.55 × 10⁵ GeV. The measured spectrum deviates from a single power law. A smoothly broken power-law fit to the data, including statistical and systematic uncertainties, shows the spectral index change at 9.0 × 10³ GeV from 2.57 ± 0.03 to 2.82 ± 0.02 with a significance of greater than 3σ. This bump-like structure is consistent with a spectral softening recently reported by the balloon-borne CREAM, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies.

Original language	English
Article number	107
Journal	Astrophysical Journal
Volume	940
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ac9d2c
State	Published - 1 Dec 2022

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Choi, G. H., Seo, E. S., Aggarwal, S., Amare, Y., Angelaszek, D., Bowman, D. P., Chen, Y. C., Copley, M., Derome, L., Eraud, L., Falana, C., Gerrety, A., Han, J. H., Huh, H. G., Haque, A., Hwang, Y. S., Hyun, H. J., Jeon, H. B., Jeon, J. A., ... Zhang, H. G. (2022). Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment. Astrophysical Journal, 940(2), Article 107. https://doi.org/10.3847/1538-4357/ac9d2c

@article{29d47734c2eb4cfa9a10b4b1af2f58c4,

title = "Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment",

abstract = "The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from 2017 August to 2019 February. We report the energy spectrum of cosmic-ray protons from the ISS-CREAM experiment at energies from 1.60 × 103 to 6.55 × 105 GeV. The measured spectrum deviates from a single power law. A smoothly broken power-law fit to the data, including statistical and systematic uncertainties, shows the spectral index change at 9.0 × 103 GeV from 2.57 ± 0.03 to 2.82 ± 0.02 with a significance of greater than 3σ. This bump-like structure is consistent with a spectral softening recently reported by the balloon-borne CREAM, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies.",

author = "Choi, \{G. H.\} and Seo, \{E. S.\} and S. Aggarwal and Y. Amare and D. Angelaszek and Bowman, \{D. P.\} and Chen, \{Y. C.\} and M. Copley and L. Derome and L. Eraud and C. Falana and A. Gerrety and Han, \{J. H.\} and Huh, \{H. G.\} and A. Haque and Hwang, \{Y. S.\} and Hyun, \{H. J.\} and Jeon, \{H. B.\} and Jeon, \{J. A.\} and S. Jeong and Kang, \{S. C.\} and Kim, \{H. J.\} and Kim, \{K. C.\} and Kim, \{M. H.\} and Lee, \{H. Y.\} and J. Lee and Lee, \{M. H.\} and L. Lu and Lundquist, \{J. P.\} and L. Lutz and A. Menchaca-Rocha and O. Ofoha and H. Park and Park, \{I. H.\} and Park, \{J. M.\} and N. Picot-Clemente and R. Scrandis and Smith, \{J. R.\} and R. Takeishi and N. Vedenkin and P. Walpole and Weinmann, \{R. P.\} and H. Wu and J. Wu and Z. Yin and Yoon, \{Y. S.\} and Zhang, \{H. G.\}",

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = dec,

day = "1",

doi = "10.3847/1538-4357/ac9d2c",

language = "English",

volume = "940",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Choi, GH, Seo, ES, Aggarwal, S, Amare, Y, Angelaszek, D, Bowman, DP, Chen, YC, Copley, M, Derome, L, Eraud, L, Falana, C, Gerrety, A, Han, JH, Huh, HG, Haque, A, Hwang, YS, Hyun, HJ, Jeon, HB, Jeon, JA, Jeong, S, Kang, SC, Kim, HJ, Kim, KC, Kim, MH, Lee, HY, Lee, J, Lee, MH, Lu, L, Lundquist, JP, Lutz, L, Menchaca-Rocha, A, Ofoha, O, Park, H, Park, IH, Park, JM, Picot-Clemente, N, Scrandis, R, Smith, JR, Takeishi, R, Vedenkin, N, Walpole, P, Weinmann, RP, Wu, H, Wu, J, Yin, Z, Yoon, YS & Zhang, HG 2022, 'Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment', Astrophysical Journal, vol. 940, no. 2, 107. https://doi.org/10.3847/1538-4357/ac9d2c

TY - JOUR

T1 - Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

AU - Choi, G. H.

AU - Seo, E. S.

AU - Aggarwal, S.

AU - Amare, Y.

AU - Angelaszek, D.

AU - Bowman, D. P.

AU - Chen, Y. C.

AU - Copley, M.

AU - Derome, L.

AU - Eraud, L.

AU - Falana, C.

AU - Gerrety, A.

AU - Han, J. H.

AU - Huh, H. G.

AU - Haque, A.

AU - Hwang, Y. S.

AU - Hyun, H. J.

AU - Jeon, H. B.

AU - Jeon, J. A.

AU - Jeong, S.

AU - Kang, S. C.

AU - Kim, H. J.

AU - Kim, K. C.

AU - Kim, M. H.

AU - Lee, H. Y.

AU - Lee, J.

AU - Lee, M. H.

AU - Lu, L.

AU - Lundquist, J. P.

AU - Lutz, L.

AU - Menchaca-Rocha, A.

AU - Ofoha, O.

AU - Park, H.

AU - Park, I. H.

AU - Park, J. M.

AU - Picot-Clemente, N.

AU - Scrandis, R.

AU - Smith, J. R.

AU - Takeishi, R.

AU - Vedenkin, N.

AU - Walpole, P.

AU - Weinmann, R. P.

AU - Wu, H.

AU - Wu, J.

AU - Yin, Z.

AU - Yoon, Y. S.

AU - Zhang, H. G.

PY - 2022/12/1

Y1 - 2022/12/1

N2 - The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from 2017 August to 2019 February. We report the energy spectrum of cosmic-ray protons from the ISS-CREAM experiment at energies from 1.60 × 103 to 6.55 × 105 GeV. The measured spectrum deviates from a single power law. A smoothly broken power-law fit to the data, including statistical and systematic uncertainties, shows the spectral index change at 9.0 × 103 GeV from 2.57 ± 0.03 to 2.82 ± 0.02 with a significance of greater than 3σ. This bump-like structure is consistent with a spectral softening recently reported by the balloon-borne CREAM, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies.

AB - The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from 2017 August to 2019 February. We report the energy spectrum of cosmic-ray protons from the ISS-CREAM experiment at energies from 1.60 × 103 to 6.55 × 105 GeV. The measured spectrum deviates from a single power law. A smoothly broken power-law fit to the data, including statistical and systematic uncertainties, shows the spectral index change at 9.0 × 103 GeV from 2.57 ± 0.03 to 2.82 ± 0.02 with a significance of greater than 3σ. This bump-like structure is consistent with a spectral softening recently reported by the balloon-borne CREAM, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies.

UR - https://www.scopus.com/pages/publications/85143602654

U2 - 10.3847/1538-4357/ac9d2c

DO - 10.3847/1538-4357/ac9d2c

M3 - Article

AN - SCOPUS:85143602654

SN - 0004-637X

VL - 940

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 107

ER -

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

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