Using GALPROP to Study H and He Spectra Hardening in Cosmic-Ray Data

ORAL

Abstract

Recent measurements from CREAM, then PAMELA and AMS-02, showed a hardening in cosmic-ray spectra at high energies. GALPROP is a numerical code that calculates cosmic-ray propagation in the Galaxy. Using GALPROP, we added rigidity breaks in cosmic-ray diffusion and source spectra to reproduce the latest data. We present results of this study and give ranges of parameter values that are allowed with current measurements.

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Authors

  • Yuxi Lu

    • Univ of Maryland-College Park

  • Mathew Chung

    • Univ of Maryland-College Park

  • Xinying Ding

    • Univ of Maryland-College Park

  • Nicolas Picot-Clemente

    • Institute for Physical Science and Technology, University of Maryland
    • Univ of Maryland-College Park

  • Eun-Suk Seo

    • University of Maryland
    • Univ of Maryland-College Park