Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GalProp–HelMod Framework
Top Cited Papers
- 29 September 2020
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal Supplement Series
- Vol. 250 (2), 27
- https://doi.org/10.3847/1538-4365/aba901
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 gamma-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) over bar, e(+/-), and nuclei: H-1-O-8, Ne-10, Mg-12, Si-14. 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 thata fractionof HEAO-3-C2 datamatchavailable AMS-02 measurements quite well and can be used together with Voyager 1 and ACE-CRIS data to makepredictionsfor 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(1) H-(28) Ni in the energy range from 1 MeV nucleon(-1) to similar to 100-500 TeV nucleon(-1), thus covering 8-9 orders of magnitude in energy. Our calculations employ the GalProp-HelModframework, which has proved to be a reliable tool in deriving the LIS of CR (p) over bar, e(-), and nuclei H-1-O-8.Keywords
Funding Information
- NASA (NNX17AB48G)
This publication has 152 references indexed in Scilit:
- FERMI-LAT OBSERVATIONS OF THE DIFFUSE γ-RAY EMISSION: IMPLICATIONS FOR COSMIC RAYS AND THE INTERSTELLAR MEDIUMThe Astrophysical Journal, 2012
- ENERGY SPECTRA OF COSMIC-RAY NUCLEI AT HIGH ENERGIESThe Astrophysical Journal, 2009
- Composition of Primary Cosmic‐Ray Nuclei at High EnergiesThe Astrophysical Journal, 2008
- Radio observational constraints on Galactic 3D-emission modelsAstronomy & Astrophysics, 2007
- Diffuse Galactic Continuum Gamma Rays: A Model Compatible with EGRET Data and Cosmic‐Ray MeasurementsThe Astrophysical Journal, 2004
- Anisotropic Inverse Compton Scattering in the GalaxyThe Astrophysical Journal, 2000
- Updated Partial Cross Sections of Proton‐Nucleus ReactionsThe Astrophysical Journal, 1998
- Charge Composition and Energy Spectra of Cosmic-Ray Nuclei at Energies above 20 GeV Per NucleonThe Astrophysical Journal, 1974
- Design and performance of an instrument for determining the chemical composition of primary cosmic radiationNuclear Instruments and Methods, 1970
- Production of Low-Energy Cosmic-Ray ElectronsPhysical Review B, 1966