CALET observations of galactic electrons in the heliosphere

Y. Komori, S. Torii, T. Tamura, Kenji Yoshida, J. Nishimura, T. Terasawa, H. Fuke, K. Hibino, M. Ichimura, K. Kasahara, K. Kashiwagi, Y. Katayose, H. Kitamura, T. Kobayashi, S. Kuramata, F. Makino, K. Mizutani, H. Murakami, S. Okuno, Y. Saito & 8 others M. Shibata, M. Takayanagi, N. Tateyama, H. Tomida, Y. Uchihori, S. Ueno, T. Yamagami, T. Yuda

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

3 Citations (Scopus)

Abstract

The CALorimetric Electron Telescope(CALET) mission is proposed to measure galactic electrons and gamma rays on ISS/JEM for three years[1]. In this paper we report the purpose of this project in solar physics and the expected results from precise measurement of electron energy spectrum in the 1-100GeV energy range. The CALET measurement of long-term variations of the energy spectrum will produce a wealth of data to investigate electron propagation in the heliosphere. CALET does not distinguish positive charge from negative one. However, we can evaluate the charge sign dependence of solar modulation using correlation with the neutron monitors, since most particles are negative electrons in this energy range. Further we estimate transport parameters, mainly the energy dependence of diffusion coefficient in the heliosphere. CALET will also have a capability of measuring the short-term variation of around ten Forbush decreases(Fds) for three years. Precise measurements of the energy spectral variation of Fds will give a conclusion of the energy dependence of Fds.

Original languageEnglish
Title of host publication29th International Cosmic Ray Conference, ICRC 2005
PublisherTata Institute of Fundamental Research
Pages453-456
Number of pages4
Volume2
Publication statusPublished - 2005
Externally publishedYes
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune
Duration: 2005 Aug 32005 Aug 10

Other

Other29th International Cosmic Ray Conference, ICRC 2005
CityPune
Period05/8/305/8/10

Fingerprint

particle telescopes
heliosphere
Forbush decreases
electrons
energy spectra
energy
solar physics
International Space Station
monitors
rays
diffusion coefficient
gamma rays
electron energy
modulation
neutrons
propagation
estimates

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Komori, Y., Torii, S., Tamura, T., Yoshida, K., Nishimura, J., Terasawa, T., ... Yuda, T. (2005). CALET observations of galactic electrons in the heliosphere. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 2, pp. 453-456). Tata Institute of Fundamental Research.

CALET observations of galactic electrons in the heliosphere. / Komori, Y.; Torii, S.; Tamura, T.; Yoshida, Kenji; Nishimura, J.; Terasawa, T.; Fuke, H.; Hibino, K.; Ichimura, M.; Kasahara, K.; Kashiwagi, K.; Katayose, Y.; Kitamura, H.; Kobayashi, T.; Kuramata, S.; Makino, F.; Mizutani, K.; Murakami, H.; Okuno, S.; Saito, Y.; Shibata, M.; Takayanagi, M.; Tateyama, N.; Tomida, H.; Uchihori, Y.; Ueno, S.; Yamagami, T.; Yuda, T.

29th International Cosmic Ray Conference, ICRC 2005. Vol. 2 Tata Institute of Fundamental Research, 2005. p. 453-456.

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

Komori, Y, Torii, S, Tamura, T, Yoshida, K, Nishimura, J, Terasawa, T, Fuke, H, Hibino, K, Ichimura, M, Kasahara, K, Kashiwagi, K, Katayose, Y, Kitamura, H, Kobayashi, T, Kuramata, S, Makino, F, Mizutani, K, Murakami, H, Okuno, S, Saito, Y, Shibata, M, Takayanagi, M, Tateyama, N, Tomida, H, Uchihori, Y, Ueno, S, Yamagami, T & Yuda, T 2005, CALET observations of galactic electrons in the heliosphere. in 29th International Cosmic Ray Conference, ICRC 2005. vol. 2, Tata Institute of Fundamental Research, pp. 453-456, 29th International Cosmic Ray Conference, ICRC 2005, Pune, 05/8/3.
Komori Y, Torii S, Tamura T, Yoshida K, Nishimura J, Terasawa T et al. CALET observations of galactic electrons in the heliosphere. In 29th International Cosmic Ray Conference, ICRC 2005. Vol. 2. Tata Institute of Fundamental Research. 2005. p. 453-456
Komori, Y. ; Torii, S. ; Tamura, T. ; Yoshida, Kenji ; Nishimura, J. ; Terasawa, T. ; Fuke, H. ; Hibino, K. ; Ichimura, M. ; Kasahara, K. ; Kashiwagi, K. ; Katayose, Y. ; Kitamura, H. ; Kobayashi, T. ; Kuramata, S. ; Makino, F. ; Mizutani, K. ; Murakami, H. ; Okuno, S. ; Saito, Y. ; Shibata, M. ; Takayanagi, M. ; Tateyama, N. ; Tomida, H. ; Uchihori, Y. ; Ueno, S. ; Yamagami, T. ; Yuda, T. / CALET observations of galactic electrons in the heliosphere. 29th International Cosmic Ray Conference, ICRC 2005. Vol. 2 Tata Institute of Fundamental Research, 2005. pp. 453-456
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AU - Komori, Y.

AU - Torii, S.

AU - Tamura, T.

AU - Yoshida, Kenji

AU - Nishimura, J.

AU - Terasawa, T.

AU - Fuke, H.

AU - Hibino, K.

AU - Ichimura, M.

AU - Kasahara, K.

AU - Kashiwagi, K.

AU - Katayose, Y.

AU - Kitamura, H.

AU - Kobayashi, T.

AU - Kuramata, S.

AU - Makino, F.

AU - Mizutani, K.

AU - Murakami, H.

AU - Okuno, S.

AU - Saito, Y.

AU - Shibata, M.

AU - Takayanagi, M.

AU - Tateyama, N.

AU - Tomida, H.

AU - Uchihori, Y.

AU - Ueno, S.

AU - Yamagami, T.

AU - Yuda, T.

PY - 2005

Y1 - 2005

N2 - The CALorimetric Electron Telescope(CALET) mission is proposed to measure galactic electrons and gamma rays on ISS/JEM for three years[1]. In this paper we report the purpose of this project in solar physics and the expected results from precise measurement of electron energy spectrum in the 1-100GeV energy range. The CALET measurement of long-term variations of the energy spectrum will produce a wealth of data to investigate electron propagation in the heliosphere. CALET does not distinguish positive charge from negative one. However, we can evaluate the charge sign dependence of solar modulation using correlation with the neutron monitors, since most particles are negative electrons in this energy range. Further we estimate transport parameters, mainly the energy dependence of diffusion coefficient in the heliosphere. CALET will also have a capability of measuring the short-term variation of around ten Forbush decreases(Fds) for three years. Precise measurements of the energy spectral variation of Fds will give a conclusion of the energy dependence of Fds.

AB - The CALorimetric Electron Telescope(CALET) mission is proposed to measure galactic electrons and gamma rays on ISS/JEM for three years[1]. In this paper we report the purpose of this project in solar physics and the expected results from precise measurement of electron energy spectrum in the 1-100GeV energy range. The CALET measurement of long-term variations of the energy spectrum will produce a wealth of data to investigate electron propagation in the heliosphere. CALET does not distinguish positive charge from negative one. However, we can evaluate the charge sign dependence of solar modulation using correlation with the neutron monitors, since most particles are negative electrons in this energy range. Further we estimate transport parameters, mainly the energy dependence of diffusion coefficient in the heliosphere. CALET will also have a capability of measuring the short-term variation of around ten Forbush decreases(Fds) for three years. Precise measurements of the energy spectral variation of Fds will give a conclusion of the energy dependence of Fds.

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