Cosmic Ray Direct Measurements

Picozza, P.; Спиллантини, П.; Marcelli, L.

doi:10.1016/j.nuclphysbps.2018.07.030

Cited by 3 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the past five decades, multitudes of in-situ measurements of GCRs with kinetic energies ranging from multi-MeV nuc −1 to multi-TeV nuc −1 have been conducted through experiments utilizing stratospheric balloons, orbiting satellites, space probes, and space stations (see Table 1 in Bindi et al 2017;Picozza et al 2018;Tomassetti 2023, and the references therein for the details). Besides, the detectors measuring the radiation doses posed by energetic particles can quantify the radiation level of GCRs and its temporal and spatial dependence (see the instruments in, e.g., Benton & Benton 2001;Caffrey & Hamby 2011;Dachev et al 2015;Honig et al 2019;Guo et al 2021;Sadykov et al 2021;Semkova et al 2023).…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Comparison of Various Galactic Cosmic-Ray Models to the State-of-the-art Particle and Radiation Measurements

Liu,

Guo,

Wang

et al. 2024

ApJS

View full text Add to dashboard Cite

Galactic cosmic rays (GCRs) are the slowly varying background energetic particles that originate outside the solar system, are modulated by the heliospheric magnetic field, and pose ongoing radiation hazards to deep space exploration missions. To assess the potential radiation risk, various models have been developed to predict the GCR flux near Earth based on propagation theories and/or empirical functions. It is essential to benchmark these models by validating against the state-of-the-art measurements. In this work, a comprehensive model–observation comparison of the energy-dependent particle flux has been performed, by combining five typical GCR models and observational data from the Cosmic Ray Isotope Spectrometer on board the Advanced Composition Explorer spacecraft at relatively lower energies and data from the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics and Alpha Magnetic Spectrometer at higher energies. The analysis shows that, out of the five models investigated in this study, the optimal model, characterized by minimal relative difference or reduced chi-square divergence from measurements, depends on the particle type, energy range, and epoch of interest. Furthermore, a silicon slab is applied to compute the absorbed dose rate using conversion factors applied to GCR model outputs, and the results are compared to measurements from the Cosmic Ray Telescope for the Effects of Radiation. The comparisons in this paper have implications for the strengths and limitations of individual GCR models, advance our comprehension of the underlying GCR transport mechanisms, and also have strong application aspects for mitigating space radiation risks.

show abstract

Section: Introductionmentioning

confidence: 99%

A Comprehensive Comparison of Various Galactic Cosmic-Ray Models to the State-of-the-art Particle and Radiation Measurements

Liu,

Guo,

Wang

et al. 2024

ApJS

View full text Add to dashboard Cite

show abstract

“…Cosmic rays are mainly relativistic atomic nuclei that impinge nearly isotropically on Earth from outer space with energies that extend from a few MeV to some ZeV [1][2][3]. Above 10 13 eV, cosmic rays can be studied indirectly by means of air shower techniques [4][5][6], and below 10 15 eV, with direct methods by using particle detectors on board of balloons, spaceships and satellites [7,8].…”

Section: Introductionmentioning

confidence: 99%

Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data

Albert¹,

Alfaro²,

Álvarez³

et al. 2022

Phys. Rev. D

View full text Add to dashboard Cite

A measurement with high statistics of the differential energy spectrum of light elements in cosmic rays, in particular, of primary H plus He nuclei, is reported. The spectrum is presented in the energy range from 6 TeV to 158 TeV per nucleus. Data was collected with the High Altitude Water Cherenkov (HAWC) Observatory between June 2015 and June 2019. The analysis was based on a Bayesian unfolding procedure, which was applied on a subsample of vertical HAWC data that was enriched to 82% of events induced by light nuclei. To achieve the mass separation, a cut on the lateral age of air shower data was set guided by predictions of CORSIKA/QGSJET-II-04 simulations. The measured spectrum is consistent with a broken power-law spectrum and shows a knee-like feature at around E = 24.0 +3.6 −3.1 TeV, with a spectral index γ = −2.51 ± 0.02 before the break and with γ = −2.83 ± 0.02 above it. The feature has a statistical significance of 4.1 σ. Within systematic uncertainties, the significance of the spectral break is 0.8 σ.

show abstract

“…Cosmic rays are mainly relativistic atomic nuclei that impinge nearly isotropically on Earth from outer space with energies that extend from a few MeV to some ZeV [64,57,31]. Above 10 13 eV, cosmic rays can be studied indirectly by means of air shower techniques [46,35,51], and below 10 15 eV, with direct methods by using particle detectors on board of balloons, spaceships and satellites [62,72].…”

Section: Introductionmentioning

confidence: 99%

Cosmic ray spectrum of protons plus helium nuclei between 6 TeV and 158 TeV from HAWC data

Albert,

Alfaro,

Alvarez

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Cosmic Ray Direct Measurements

Cited by 3 publications

References 43 publications

A Comprehensive Comparison of Various Galactic Cosmic-Ray Models to the State-of-the-art Particle and Radiation Measurements

A Comprehensive Comparison of Various Galactic Cosmic-Ray Models to the State-of-the-art Particle and Radiation Measurements

Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data

Cosmic ray spectrum of protons plus helium nuclei between 6 TeV and 158 TeV from HAWC data

Contact Info

Product

Resources

About