The science objectives for CALET

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

3 Citations (Scopus)

Abstract

The CALorimetric Electron Telescope, CALET, is a new all-sky electron and gamma ray observatory to be installed on the standard external payload port of the Japanese Experiment Module Exposure Facility (JEM-EF) of the International Space Station (ISS). The high precision measurements of the electron energy spectrum and the particle arrival directions (10 GeV - 20 TeV) enable CALET to detect distinctive features from nearby cosmic-ray electron sources and WIMP dark matter annihilation or decay. The electron observations in the 1 GeV - 10 GeV region also allow solar modulation investigations. The outstanding energy resolution, better than ∼2 % above 100 GeV, is ideal to detect gamma-ray lines and/or spectral signatures from WIMP dark matter through galactic and extra-galactic diffuse gamma-ray observations in the 10 GeV - 10 TeV region. Gamma-ray sources such as SNRs, AGNs, GRBs, and so on are also objectives for CALET to investigate high-energy phenomena. The cosmic-ray spectra of proton, helium, and heavier nuclei up to iron can be measured in the energy range from several 10 GeV to 1000 TeV. In particular, the measurements of the B/C-ratio above 100 GeV will enable CALET to limit cosmic-ray propagation mechanisms. In this paper, we present the scientific prospects of CALET to investigate the origin, acceleration and propagation mechanisms of cosmic rays and conduct a dark matter search.

Original languageEnglish
Title of host publicationProceedings of the 32nd International Cosmic Ray Conference, ICRC 2011
PublisherInstitute of High Energy Physics
Pages367-370
Number of pages4
Volume6
DOIs
Publication statusPublished - 2011
Event32nd International Cosmic Ray Conference, ICRC 2011 - Beijing
Duration: 2011 Aug 112011 Aug 18

Other

Other32nd International Cosmic Ray Conference, ICRC 2011
CityBeijing
Period11/8/1111/8/18

Fingerprint

cosmic rays
dark matter
weakly interacting massive particles
particle telescopes
gamma rays
Gamma Ray Observatory
nuclei
spectral signatures
propagation
electron sources
International Space Station
heavy nuclei
payloads
arrivals
sky
energy
rays
energy spectra
electrons
modules

Keywords

  • Cosmic-ray electrons
  • Cosmic-ray origin
  • Dark matter
  • Gamma rays
  • Nuclei

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Yoshida, K. (2011). The science objectives for CALET. In Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 (Vol. 6, pp. 367-370). Institute of High Energy Physics. https://doi.org/10.7529/ICRC2011/V06/0766

The science objectives for CALET. / Yoshida, Kenji.

Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6 Institute of High Energy Physics, 2011. p. 367-370.

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

Yoshida, K 2011, The science objectives for CALET. in Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. vol. 6, Institute of High Energy Physics, pp. 367-370, 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, 11/8/11. https://doi.org/10.7529/ICRC2011/V06/0766
Yoshida K. The science objectives for CALET. In Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6. Institute of High Energy Physics. 2011. p. 367-370 https://doi.org/10.7529/ICRC2011/V06/0766
Yoshida, Kenji. / The science objectives for CALET. Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6 Institute of High Energy Physics, 2011. pp. 367-370
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AB - The CALorimetric Electron Telescope, CALET, is a new all-sky electron and gamma ray observatory to be installed on the standard external payload port of the Japanese Experiment Module Exposure Facility (JEM-EF) of the International Space Station (ISS). The high precision measurements of the electron energy spectrum and the particle arrival directions (10 GeV - 20 TeV) enable CALET to detect distinctive features from nearby cosmic-ray electron sources and WIMP dark matter annihilation or decay. The electron observations in the 1 GeV - 10 GeV region also allow solar modulation investigations. The outstanding energy resolution, better than ∼2 % above 100 GeV, is ideal to detect gamma-ray lines and/or spectral signatures from WIMP dark matter through galactic and extra-galactic diffuse gamma-ray observations in the 10 GeV - 10 TeV region. Gamma-ray sources such as SNRs, AGNs, GRBs, and so on are also objectives for CALET to investigate high-energy phenomena. The cosmic-ray spectra of proton, helium, and heavier nuclei up to iron can be measured in the energy range from several 10 GeV to 1000 TeV. In particular, the measurements of the B/C-ratio above 100 GeV will enable CALET to limit cosmic-ray propagation mechanisms. In this paper, we present the scientific prospects of CALET to investigate the origin, acceleration and propagation mechanisms of cosmic rays and conduct a dark matter search.

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