Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope

Ryuho Kataoka; Yoichi Asaoka; Shoji Torii; Toshio Terasawa; Shunsuke Ozawa; Tadahisa Tamura; Yuki Shimizu; Yosui Akaike; Masaki Mori

doi:10.1002/2016GL068930

Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope

Ryuho Kataoka^*, Yoichi Asaoka, Shoji Torii, Toshio Terasawa, Shunsuke Ozawa, Tadahisa Tamura, Yuki Shimizu, Yosui Akaike, Masaki Mori

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The charge detector (CHD) of the Calorimetric Electron Telescope (CALET) on board the International Space Station (ISS) has a huge geometric factor for detecting MeV electrons and is sensitive to relativistic electron precipitation (REP) events. During the first 4 months, CALET CHD observed REP events mainly at the dusk to midnight sector near the plasmapause, where the trapped radiation belt electrons can be efficiently scattered by electromagnetic ion cyclotron (EMIC) waves. Here we show that interesting 5-20 s periodicity regularly exists during the REP events at ISS, which is useful to diagnose the wave-particle interactions associated with the nonlinear wave growth of EMIC-triggered emissions.

Original language	English
Pages (from-to)	4119-4125
Number of pages	7
Journal	Geophysical Research Letters
Volume	43
Issue number	9
DOIs	https://doi.org/10.1002/2016GL068930
Publication status	Published - 2016 May 16

Keywords

International Space Station
electromagnetic ion cyclotron waves
radiation belt
relativistic electrons
space weather forecast

ASJC Scopus subject areas

Geophysics
Earth and Planetary Sciences(all)

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10.1002/2016GL068930

Cite this

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title = "Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope",

abstract = "The charge detector (CHD) of the Calorimetric Electron Telescope (CALET) on board the International Space Station (ISS) has a huge geometric factor for detecting MeV electrons and is sensitive to relativistic electron precipitation (REP) events. During the first 4 months, CALET CHD observed REP events mainly at the dusk to midnight sector near the plasmapause, where the trapped radiation belt electrons can be efficiently scattered by electromagnetic ion cyclotron (EMIC) waves. Here we show that interesting 5-20 s periodicity regularly exists during the REP events at ISS, which is useful to diagnose the wave-particle interactions associated with the nonlinear wave growth of EMIC-triggered emissions.",

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author = "Ryuho Kataoka and Yoichi Asaoka and Shoji Torii and Toshio Terasawa and Shunsuke Ozawa and Tadahisa Tamura and Yuki Shimizu and Yosui Akaike and Masaki Mori",

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T1 - Relativistic electron precipitation at International Space Station

T2 - Space weather monitoring by Calorimetric Electron Telescope

AU - Kataoka, Ryuho

AU - Asaoka, Yoichi

AU - Torii, Shoji

AU - Terasawa, Toshio

AU - Ozawa, Shunsuke

AU - Tamura, Tadahisa

AU - Shimizu, Yuki

AU - Akaike, Yosui

AU - Mori, Masaki

PY - 2016/5/16

Y1 - 2016/5/16

N2 - The charge detector (CHD) of the Calorimetric Electron Telescope (CALET) on board the International Space Station (ISS) has a huge geometric factor for detecting MeV electrons and is sensitive to relativistic electron precipitation (REP) events. During the first 4 months, CALET CHD observed REP events mainly at the dusk to midnight sector near the plasmapause, where the trapped radiation belt electrons can be efficiently scattered by electromagnetic ion cyclotron (EMIC) waves. Here we show that interesting 5-20 s periodicity regularly exists during the REP events at ISS, which is useful to diagnose the wave-particle interactions associated with the nonlinear wave growth of EMIC-triggered emissions.

AB - The charge detector (CHD) of the Calorimetric Electron Telescope (CALET) on board the International Space Station (ISS) has a huge geometric factor for detecting MeV electrons and is sensitive to relativistic electron precipitation (REP) events. During the first 4 months, CALET CHD observed REP events mainly at the dusk to midnight sector near the plasmapause, where the trapped radiation belt electrons can be efficiently scattered by electromagnetic ion cyclotron (EMIC) waves. Here we show that interesting 5-20 s periodicity regularly exists during the REP events at ISS, which is useful to diagnose the wave-particle interactions associated with the nonlinear wave growth of EMIC-triggered emissions.

KW - International Space Station

KW - electromagnetic ion cyclotron waves

KW - radiation belt

KW - relativistic electrons

KW - space weather forecast

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Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope

Abstract

Keywords

ASJC Scopus subject areas

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