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

Yuxi Lu; Mathew Chung; Xinying Ding; Nicolas Picot-Clemente; Eun-Suk Seo

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.

Jan. 29, 2017, 9:06 AM – Jan. 29, 2017, 9:18 AM

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