Conveners
Relevant XS reactions and precision for GCRs
- Fiorenza Donato (Torino University)
Relevant XS reactions and precision for GCRs
- Fiorenza Donato (Torino University)
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David Alain Maurin (Centre National de la Recherche Scientifique (FR))17/10/2024, 10:05
High-precision cosmic-ray data from ongoing and recent past experiments are being released in the tens of the MeV/n to multi-TeV/n energy range. Astrophysical and dark matter interpretations of these data are limited by the precision of nuclear production cross sections. I will present the procedure we developed to rank nuclear reactions, whose measurements would be a game changer for the...
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Luca Orusa (University of Torino)17/10/2024, 10:30
Accurate interpretation of cosmic-ray electron and positron fluxes, as well as gamma-ray emissions, requires precise knowledge of the cross sections governing cosmic-ray interactions with the interstellar medium. Primarily involving protons and helium, these reactions produce secondary positrons and gamma rays, key observables for probing cosmic-ray propagation, dark matter searches, and the...
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Diego Mauricio Gomez Coral (Universidad Nacional Autonoma (MX))18/10/2024, 09:50
The AMS collaboration has published recent results on deuteron-over-helium-4 ($d$/$^4$He) and helium-3-over-helium-4 ($^3$He/$^4$He) cosmic rays flux ratios with unprecedented precision and covering a wider energy range than previous experiments. Both $d$/$^4$He and $^3$He/$^4$He ratios are important to understand the propagation of cosmic rays in the Galaxy and the heliosphere, complementing...
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Priyarshini Ghosh (NASA Goddard Space Flight Center)18/10/2024, 10:05
TIGERISS, the recently selected Pioneers mission, will look at elemental abundances across a wide Z range, from 5B up to 82Pb, for the first time with a single instrument, to further our knowledge of the way the galaxy redistributes elements. However, accurate cross section data is paramount to the accurate interpretation of this observed experimental data. High Z (>Z) proton spallation...
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Pedro De la Torre Luque (Institute of theoretical physics (IFT-UAM))18/10/2024, 10:20
Despite the simplicity of our phenomenological models of CR propagation, we have been able to explain with very good accuracy the fluxes of the main secondary CRs, including antiprotons. In this talk, we show new cross sections of CR interactions in the Galaxy computed with FLUKA, covering from light secondaries, such as deuterium, tritium or 3He, to gamma rays and neutrinos. In addition, we...
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Alessandro Cuoco18/10/2024, 10:35
The AMS-02 experiment has provided high-precision measurements of several cosmic-ray (CR) species. We exploit the AMS-02 data to investigate CR propagation in the Galaxy, and provide updated constraints on reacceleration, convection, and the spatial and rigidity dependence of the diffusion coefficient. We explicitly consider the impact of the uncertainties in the nuclear production...
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Meng-Jie Zhao (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences)18/10/2024, 10:50
The AMS-02 collaboration has reported preliminary results on beryllium and lithium isotope fluxes, extending the energy range beyond that of previous experiments. As secondary CRs, the Be isotopes include both stable and unstable species, which are crucial for constraining the propagation parameters of the Galactic CRs. The $\rm^{10}Be/^9Be$ ratio measured by AMS-02 can better resolve the...
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