Composition and spectra of Galactic cosmic rays (CRs) are vital for studies of high-energy processes in a variety of environments and on different scales, for interpretation of γ-ray and microwave observations, for disentangling possible signatures of new phenomena, and for understanding of our local Galactic neighborhood. Since its launch, AMS-02 has delivered outstanding-quality measurements of the spectra of ¯p, e, and nuclei: 1H–8O, 10Ne, 12Mg, 14Si. These measurements resulted in a number of breakthroughs; however, spectra of heavier nuclei and especially low-abundance nuclei are not expected until later in the mission. Meanwhile, a comparison of published AMS-02 results with earlier data from HEAO-3-C2 indicates that HEAO-3-C2 data may be affected by undocumented systematic errors. Utilizing such data to compensate for the lack of AMS-02 measurements could result in significant errors. In this paper we show that a fraction of HEAO-3-C2 data match available AMS-02 measurements quite well and can be used together with Voyager 1 and ACE-CRIS data to make predictions for the local interstellar spectra (LIS) of nuclei that are not yet released by AMS-02. We are also updating our already published LIS to provide a complete set from 1H–28Ni in the energy range from 1 MeV nucleon−1 to ∼100–500 TeV nucleon−1, thus covering 8–9 orders of magnitude in energy. Our calculations employ the GALPROP– HELMOD framework, which has proved to be a reliable tool in deriving the LIS of CR ¯p, e−, and nuclei 1H–8O.

Boschini, M., Torre, S., Gervasi, M., Grandi, D., Jóhannesson, G., La Vacca, G., et al. (2020). Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GalProp–HelMod Framework. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 250(2), 27 [10.3847/1538-4365/aba901].

Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GalProp–HelMod Framework

Gervasi, M.;Grandi, D.;La Vacca, G.;Pensotti, S.;Rozza, D.;Tacconi, M.
2020

Abstract

Composition and spectra of Galactic cosmic rays (CRs) are vital for studies of high-energy processes in a variety of environments and on different scales, for interpretation of γ-ray and microwave observations, for disentangling possible signatures of new phenomena, and for understanding of our local Galactic neighborhood. Since its launch, AMS-02 has delivered outstanding-quality measurements of the spectra of ¯p, e, and nuclei: 1H–8O, 10Ne, 12Mg, 14Si. These measurements resulted in a number of breakthroughs; however, spectra of heavier nuclei and especially low-abundance nuclei are not expected until later in the mission. Meanwhile, a comparison of published AMS-02 results with earlier data from HEAO-3-C2 indicates that HEAO-3-C2 data may be affected by undocumented systematic errors. Utilizing such data to compensate for the lack of AMS-02 measurements could result in significant errors. In this paper we show that a fraction of HEAO-3-C2 data match available AMS-02 measurements quite well and can be used together with Voyager 1 and ACE-CRIS data to make predictions for the local interstellar spectra (LIS) of nuclei that are not yet released by AMS-02. We are also updating our already published LIS to provide a complete set from 1H–28Ni in the energy range from 1 MeV nucleon−1 to ∼100–500 TeV nucleon−1, thus covering 8–9 orders of magnitude in energy. Our calculations employ the GALPROP– HELMOD framework, which has proved to be a reliable tool in deriving the LIS of CR ¯p, e−, and nuclei 1H–8O.
Articolo in rivista - Articolo scientifico
Galactic cosmic rays; Interplanetary medium; Interstellar medium; Heliosphere; Cosmic ray sources; Cosmic ray detectors
English
27
Boschini, M., Torre, S., Gervasi, M., Grandi, D., Jóhannesson, G., La Vacca, G., et al. (2020). Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GalProp–HelMod Framework. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 250(2), 27 [10.3847/1538-4365/aba901].
Boschini, M; Torre, S; Gervasi, M; Grandi, D; Jóhannesson, G; La Vacca, G; Masi, N; Moskalenko, I; Pensotti, S; Porter, T; Quadrani, L; Rancoita, P; Rozza, D; Tacconi, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/286833
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