Dark matter search with the CALET detector on-board ISS

Shoji Torii*, K. Yoshida, K. Kasahara, T. Tamura, J. Chang

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)


    The CALorimetric Electron Telescope, CALET, mission is proposed for the observation of high-energy electrons and gamma-rays at the Exposed Facility of the Japanese Experiment Module on the International Space Station. The CALET has a capability to observe the electrons (without separation between e+ and e-) in 1 GeV-10 TeV and the gamma-rays in 20 MeV-several TeV with a high-energy resolution of 2% at 100 GeV, a good angular resolution of 0.06 degree at 100 GeV, and a high proton-rejection power of nearly 106. The CALET has a geometrical factor of ∼1 m2sr, and the observation period is expected for more than three years. The very precise measurement of electrons enables us to detect a distinctive feature in the energy spectrum caused from WIMP dark matter in the Galactic halo. The excellent energy resolution of CALET, which is much better than GLAST or air Cherenkov telescopes over 10 GeV, enables us to detect gamma-ray lines in the sub-TeV region from WIMP dark matter annihilations. The CALET has, therefore, a unique capability to search for WIMP dark matter by the hybrid observations of electrons and gamma-rays.

    Original languageEnglish
    Pages (from-to)2032-2036
    Number of pages5
    JournalAdvances in Space Research
    Issue number12
    Publication statusPublished - 2008


    • Cosmic-ray electrons
    • Dark matter
    • Gamma-rays
    • International Space Station

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics


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