Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005idm..conf..557y&link_type=abstract
THE IDENTIFICATION OF DARK MATTER. Proceedings of the Fifth International Workshop. Held 6-10 September 2004 in Edinburgh, UK. E
Physics
Scientific paper
We are proposing the CALET (CALorimetric Electron Telescope) instrument for the observation of high-energy gamma rays and electrons at the Exposed Facility of the Japanese Experiment Module on the International Space Station. The CALET has a capability to observe gamma rays in 20 MeV - 10 TeV and electrons (+positrons) in 1 GeV - 10 TeV with a high energy resolution of 2 % at 100 GeV, a good angular resolution of 0.06 deg at 100 GeV, and a high proton rejection power of 106. The CALET has the geometrical factor of nearly 1m2sr and three-years observation is expected. 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 GeV - TeV region from WIMP dark matter annihilations. In addition, although the CALET cannot separate negative electrons and positrons, the high precise spectrum of electrons(+positrons) enables us to detect distinctive features from WIMP annihilations in the Galactic halo. Thus the CALET has a unique capability to search for WIMP dark matter by the hybrid observation of high-energy gamma rays and electrons.
CALET Collaboration
Yoshida Koji
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