Prospects of gamma-ray observations and dark matter search with CALET

K. Yoshida, A. Kubota, Shoji Torii, K. Kasahara, Y. Shimizu, T. Tamura, J. Chang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We are developing the CALET (CALorimetric Electron Telescope) instrument for the observation of high-energy electrons and gamma rays at the Exposed Facility of the Japanese Experiment Module on the International Space Station (ISS). CALET has a capability to observe electrons (+positrons) in 1 GeV-10 TeV and gamma rays in 20 MeV-10 TeV with a high energy resolution of < 2 % over 100 GeV, a good angular resolution of 0.06 deg at 100 GeV, and a high proton rejection power of 106. CALET has the geometrical factor of nearly 0.8 m2sr and three-years observation is expected. Thus, CALET is a complementary gamma-ray detector with GLAST, HESS and so on. In particular, the excellent energy resolution of CALET, which is much better than GLAST or air Cherenkov telescopes over 10 GeV, is ideal for detection of gamma-ray lines in the GeV-TeV region from WIMP dark matter annihilations. The high precise observations of electrons(+positrons) also enable us to detect distinctive positron features from WIMP annihilations. In this paper, we present prospects of gamma-ray observations and dark matter search by the hybrid observations of gamma rays and electrons with CALET.

    Original languageEnglish
    Title of host publicationProceedings of the 30th International Cosmic Ray Conference, ICRC 2007
    PublisherUniversidad Nacional Autonoma de Mexico
    Pages817-820
    Number of pages4
    Volume4
    EditionHE PART 1
    Publication statusPublished - 2007
    Event30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan
    Duration: 2007 Jul 32007 Jul 11

    Other

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

    Fingerprint

    particle telescopes
    dark matter
    gamma rays
    positrons
    Fermi Gamma-ray Space Telescope
    weakly interacting massive particles
    rays
    electrons
    International Space Station
    angular resolution
    rejection
    high energy electrons
    modules
    telescopes
    protons
    energy
    air
    detectors

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Yoshida, K., Kubota, A., Torii, S., Kasahara, K., Shimizu, Y., Tamura, T., & Chang, J. (2007). Prospects of gamma-ray observations and dark matter search with CALET. In Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007 (HE PART 1 ed., Vol. 4, pp. 817-820). Universidad Nacional Autonoma de Mexico.

    Prospects of gamma-ray observations and dark matter search with CALET. / Yoshida, K.; Kubota, A.; Torii, Shoji; Kasahara, K.; Shimizu, Y.; Tamura, T.; Chang, J.

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. Vol. 4 HE PART 1. ed. Universidad Nacional Autonoma de Mexico, 2007. p. 817-820.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Yoshida, K, Kubota, A, Torii, S, Kasahara, K, Shimizu, Y, Tamura, T & Chang, J 2007, Prospects of gamma-ray observations and dark matter search with CALET. in Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. HE PART 1 edn, vol. 4, Universidad Nacional Autonoma de Mexico, pp. 817-820, 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, 07/7/3.
    Yoshida K, Kubota A, Torii S, Kasahara K, Shimizu Y, Tamura T et al. Prospects of gamma-ray observations and dark matter search with CALET. In Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. HE PART 1 ed. Vol. 4. Universidad Nacional Autonoma de Mexico. 2007. p. 817-820
    Yoshida, K. ; Kubota, A. ; Torii, Shoji ; Kasahara, K. ; Shimizu, Y. ; Tamura, T. ; Chang, J. / Prospects of gamma-ray observations and dark matter search with CALET. Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. Vol. 4 HE PART 1. ed. Universidad Nacional Autonoma de Mexico, 2007. pp. 817-820
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    AU - Torii, Shoji

    AU - Kasahara, K.

    AU - Shimizu, Y.

    AU - Tamura, T.

    AU - Chang, J.

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    AB - We are developing the CALET (CALorimetric Electron Telescope) instrument for the observation of high-energy electrons and gamma rays at the Exposed Facility of the Japanese Experiment Module on the International Space Station (ISS). CALET has a capability to observe electrons (+positrons) in 1 GeV-10 TeV and gamma rays in 20 MeV-10 TeV with a high energy resolution of < 2 % over 100 GeV, a good angular resolution of 0.06 deg at 100 GeV, and a high proton rejection power of 106. CALET has the geometrical factor of nearly 0.8 m2sr and three-years observation is expected. Thus, CALET is a complementary gamma-ray detector with GLAST, HESS and so on. In particular, the excellent energy resolution of CALET, which is much better than GLAST or air Cherenkov telescopes over 10 GeV, is ideal for detection of gamma-ray lines in the GeV-TeV region from WIMP dark matter annihilations. The high precise observations of electrons(+positrons) also enable us to detect distinctive positron features from WIMP annihilations. In this paper, we present prospects of gamma-ray observations and dark matter search by the hybrid observations of gamma rays and electrons with CALET.

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