Energy spectrum and arrival directions of high-energy electrons over 100 GeV observed with PPB-BETS

K. Yoshida, Shoji Torii, T. Tamura, H. Kitamura, T. Yamagami, 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

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    We have observed cosmic-ray electrons from 10 GeV to 1 TeV with PPB-BETS by a long duration balloon flight using Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an altitude of 35 km in January 2004. The detector is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates. The geometrical factor of detector is about 600 cm2sr and the total thickness of lead absorber is 9 radiation lengths. We have collected 5.7103 events over 100 GeV including nearly 100 candidates of primary electrons. During the flight, sun aspect sensors and geomagnetic aspect sensors operated to determine the attitude of the instrument. The arrival directions of high-energy electrons over 100 GeV, together with the energy spectrum, are suggested to be a powerful probe to identify nearby cosmic- ray electron sources. In this paper, we present the energy spectrum and arrival directions of cosmic-ray electrons from 100 GeV to 1 TeV observed with PPB-BETS.

    本文言語English
    ホスト出版物のタイトルProceedings of the 30th International Cosmic Ray Conference, ICRC 2007
    出版社Universidad Nacional Autonoma de Mexico
    ページ59-62
    ページ数4
    2
    OG PART 1
    出版ステータスPublished - 2007
    イベント30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan
    継続期間: 2007 7月 32007 7月 11

    Other

    Other30th International Cosmic Ray Conference, ICRC 2007
    CityMerida, Yucatan
    Period07/7/307/7/11

    ASJC Scopus subject areas

    • 核物理学および高エネルギー物理学

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