Cosmic-ray electron spectrum above 100 GeV from PPB-BETS experiment in Antarctica

K. Yoshida*, Shoji Torii, T. Yamagami, T. Tamura, H. Kitamura, J. Chang, I. Iijima, A. Kadokura, K. Kasahara, Y. Katayose, T. Kobayashi, Y. Komori, Y. Matsuzaka, K. Mizutani, H. Murakami, M. Namiki, J. Nishimura, S. Ohta, Y. Saito, M. ShibataN. Tateyama, H. Yamagishi, T. Yuda

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    55 Citations (Scopus)


    Cosmic-ray electrons have been observed in the energy region from 10 GeV to 1 TeV with the PPB-BETS by a long duration balloon flight using a Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an average altitude of 35 km in January 2004. The PPB-BETS detector is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates. In the study of cosmic-ray electrons, there have been some suggestions that high-energy electrons above 100 GeV are a powerful probe to identify nearby cosmic-ray sources and search for particle dark matter. In this paper, we present the energy spectrum of cosmic-ray electrons in the energy range from 100 GeV to 1 TeV at the top of atmosphere, and compare our spectrum with the results from other experiments.

    Original languageEnglish
    Pages (from-to)1670-1675
    Number of pages6
    JournalAdvances in Space Research
    Issue number10
    Publication statusPublished - 2008 Nov 17


    • Cosmic-ray electrons
    • Cosmic-ray origin
    • Long duration balloon

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics


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