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

Choi, Gwan Hyun; Seo, E. S.; Aggarwal, S.; Amare, Y.; Angelaszek, D.; Bowman, D.; Chen, Y. C.; Copley, M.; Derome, L.; Eraud, L.; Falana, C.; Gerrety, A.; Han, Ji Hye; Huh, H.G.; Haque, Alifa Bintha; Hwang, Yong Seok; Hyun, H.J.; Jeon, H. B.; Jeon, Jin-A; Jeong, S.; Kang, Sinchul; Kim, H. J.; Kim, K. C.; Kim, M.H.; Lee, H. Y.; Lee, J.; Lee, M. H.; Lu, Yuxi; Lundquist, Jon Paul; Lutz, L.; Menchaca‐Rocha, A.; Ofoha, O.; Park, H.; Park, Il H.; Park, J. M.; Picot-Clémente, N.; Scrandis, R.; Smith, Jacob; Takeishi, Ryuji; Vedenkin, N.; Walpole, P.; Weinmann, R.; Wu, H. R.; Wu, J.; Yin, Zhye; Yoon, Y. S.; Zhang, H. G.

doi:10.3847/1538-4357/ac9d2c

Cited by 18 publications

(20 citation statements)

References 39 publications

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“…The first decisive evidence was provided by the NUCLEON team [79], which observed the break in the spectra of protons, He, and light elements at the same rigidity. This break is now confirmed by several instruments: DAMPE [80], CALET [81], and ISS-CREAM [82]. A striking increase in anisotropy in the same energy range from ∼0.2-100 TeV [83] indicates that these two breaks form a single bump structure from ∼0.2-100 TV rather than being two independent features; note that for protons dominating in CRs, their kinetic energy is approximately equal to the rigidity at high energies.…”

Section: Gv and 10 Tv Breaks Or The Tv Bumpmentioning

confidence: 83%

Direct measurements of cosmic rays and their possible interpretations

Moskalenko

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The last two decades have brought spectacular advances in astrophysics of cosmic rays (CRs) and space-and ground-based astronomy. Launches of missions that employ forefront detector technologies enabled measurements with large effective areas, wide fields of view, and precision that we recently could not even dream of. Meanwhile, interpretation of the individual slices of information about the internal working of the Milky Way provided by such experiments poses challenges to the traditional astrophysical models. New mysteries arise in the composition and spectra of CR species at low and high energies, in the energy range where we thought the main features were already understood fairly well. This accumulation of unsolved puzzles highlights the peculiarity of the current epoch and means that major breakthroughs are still ahead. In my talk, I review the current state of direct measurements of CRs and discuss their possible interpretations. Unfortunately, many important ideas and publications are not discussed here due to the space limitations.

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Section: Gv and 10 Tv Breaks Or The Tv Bumpmentioning

confidence: 83%

Direct measurements of cosmic rays and their possible interpretations

Moskalenko

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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“…More recently, another interesting and unexpected feature was observed from calorimeters DAMPE, CALET, NUCLEON and ISS-CREAM. It consists in the observation a new "knee", i.e., a spectral steepening, in the flux of CRs at about 10 TeV of energy [23][24][25][26][27]. Such a features has been observed in both protons and helium fluxes.…”

Section: Pos(ecrs)007mentioning

confidence: 97%

Direct Measurements of Galactic Cosmic Rays

Tomassetti¹

2023

Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)

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This paper reviews recent progress in the field of direct measurements of Galactic cosmic rays. High-statistic measurements of cosmic ray energy spectra, chemical and isotopic composition, and the rare antimatter components have been made using large particle physics experiments operating in space. The recent results are discussed in relation to our understanding of the origin of cosmic rays, the open questions, and the challenges for future experiments of direct detection.

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“…CR proton energy spectrum by the GRAPES-3 experiment F. Varsi where 𝑁 𝑖 , 𝐴 𝑎𝑐𝑐,1 and Δ𝐸 are the number of EAS, acceptance, and width of 𝑖 𝑡 ℎ energy bin of the unfolded energy distribution, respectively, and 𝑇 𝑙𝑖𝑣𝑒 is the live time of the data. In the left panel of Figure 6, the measured preliminary energy spectrum of the proton primary is plotted with direct [10][11][12][13][14][15] and indirect [16][17][18] observations. The flux of the measured proton spectrum in this work shows good agreement with ISS-CREAM, CREAM I+III at lower energy and is consistent with KASCADE (QGSJET-I-01) at higher energy.…”

Section: Pos(icrc2023)520mentioning

confidence: 99%

Cosmic ray proton energy spectrum below the Knee observed by the GRAPES-3 experiment

Varsi¹,

Ahmad²,

Chakraborty³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The GRAPES-3 experiment consists of a densely packed array of 400 plastic scintillator detectors and a large area (560 𝑚 2 ) muon telescope. It measures cosmic rays in an energy range of several TeV to over 10 PeV with a trigger efficiency of more than 90% for proton primaries above 40 TeV, providing a substantial overlap with space based direct experiments. The scintillator array records the particle density and arrival time of the shower secondaries, which were used to estimate the shower parameters. The muon telescope is dedicated to recording the muon component in the shower. The observed muon multiplicity distributions (MMDs) were used for precise measurements of the average nuclear composition for proton, helium, nitrogen, aluminium, and iron primaries, independent of making assumptions about the primary composition. In the present work, Gold's unfolding algorithm was used to extract the nuclear composition and obtain the proton energy spectrum with the help of simulation based on QGSJET-II-04/FLUKA hadronic interaction models. Details of the analysis and results for the extracted composition and proton energy spectrum below the Knee will be presented.

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

Cited by 18 publications

References 39 publications

Direct measurements of cosmic rays and their possible interpretations

Direct measurements of cosmic rays and their possible interpretations

Direct Measurements of Galactic Cosmic Rays

Cosmic ray proton energy spectrum below the Knee observed by the GRAPES-3 experiment

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