CALET observations of cosmic ray electrons in the heliosphere

Yoshiko Komori, Shoji Torii, Tadahisa Tamura, Kenji Yoshida, Toshio Terasawa, Kazuoki Munakata

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

Abstract

The CALorimetric Electron Telescope (CALET) mission has been proposed to measure electrons and gamma rays in a wide energy range on the Japanese Experiment Module (JEM)/International Space Station (ISS) and the development is being carried out successfully. CALET has a large geometric factor that makes it possible to continuously and precisely measure electron intensities, and can provide statistically sufficient data for GeV energies, though the low energy measurements will be performed in a restricted time period and are severely restricted by ISS orbits. The purpose of the CALET mission pertaining to solar physics is to get new information on the cosmic ray transport in the heliosphere. We estimate the energy dependence of the diffusion of electrons through the solar magnetic field. Further we simultaneously observe electrons and protons in the 1- 10 GeV energy range and investigate the charge sign dependence of solar modulation. We also discuss some expectations in different solar polarities, using a correlation between the cosmic-ray intensity and the neutron monitor counting rate. For short-term measurements, we expect to detect several Forbush decreases in electron flux. In such decreases, shortterm variations of negative charges might differ from those of positive ones.

Original languageEnglish
Title of host publication31st International Cosmic Ray Conference, ICRC 2009
PublisherUniversity of Lodz
Publication statusPublished - 2009
Event31st International Cosmic Ray Conference, ICRC 2009 - Lodz
Duration: 2009 Jul 72009 Jul 15

Other

Other31st International Cosmic Ray Conference, ICRC 2009
CityLodz
Period09/7/709/7/15

Fingerprint

particle telescopes
heliosphere
cosmic rays
International Space Station
electrons
energy
Forbush decreases
solar physics
electron flux density
solar magnetic field
electron flux
monitors
polarity
rays
counting
modules
gamma rays
orbits
modulation
neutrons

Keywords

  • Electrons
  • ISS
  • Solar modulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Komori, Y., Torii, S., Tamura, T., Yoshida, K., Terasawa, T., & Munakata, K. (2009). CALET observations of cosmic ray electrons in the heliosphere. In 31st International Cosmic Ray Conference, ICRC 2009 University of Lodz.

CALET observations of cosmic ray electrons in the heliosphere. / Komori, Yoshiko; Torii, Shoji; Tamura, Tadahisa; Yoshida, Kenji; Terasawa, Toshio; Munakata, Kazuoki.

31st International Cosmic Ray Conference, ICRC 2009. University of Lodz, 2009.

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

Komori, Y, Torii, S, Tamura, T, Yoshida, K, Terasawa, T & Munakata, K 2009, CALET observations of cosmic ray electrons in the heliosphere. in 31st International Cosmic Ray Conference, ICRC 2009. University of Lodz, 31st International Cosmic Ray Conference, ICRC 2009, Lodz, 09/7/7.
Komori Y, Torii S, Tamura T, Yoshida K, Terasawa T, Munakata K. CALET observations of cosmic ray electrons in the heliosphere. In 31st International Cosmic Ray Conference, ICRC 2009. University of Lodz. 2009
Komori, Yoshiko ; Torii, Shoji ; Tamura, Tadahisa ; Yoshida, Kenji ; Terasawa, Toshio ; Munakata, Kazuoki. / CALET observations of cosmic ray electrons in the heliosphere. 31st International Cosmic Ray Conference, ICRC 2009. University of Lodz, 2009.
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AU - Munakata, Kazuoki

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