Dark matter search with the CALET detector on-board ISS

S. Torii, K. Yoshida, K. Kasahara, T. Tamura, J. Chang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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 10 6 . The CALET has a geometrical factor of ∼1 m 2 sr, 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
Volume41
Issue number12
DOIs
Publication statusPublished - 2008

    Fingerprint

Keywords

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

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

Cite this