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. JeongS. 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

13 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

Access to Document

10.3847/1538-4357/ac9d2c

Cite this

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 - http://www.scopus.com/inward/record.url?scp=85143602654&partnerID=8YFLogxK

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this