JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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titleHighly energetic electron environment in the inner magnetosphere
Other TitleHighly energetic electron environment in the inner magnetosphere
Author(jpn)小原 隆博; 松本 晴久; 古賀 清一; 越石 英樹; 五家 建夫
Author(eng)Obara, Takahiro; Matsumoto, Haruhisa; Koga, Kiyokazu; Koshiishi, Hideki; Goka, Tateo
Author Affiliation(jpn)情報通信研究機構; 宇宙航空研究開発機構; 宇宙航空研究開発機構; 宇宙航空研究開発機構; 宇宙航空研究開発機構
Author Affiliation(eng)National Institute of Information and Communications Technology; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency
Issue Date2008-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構
Publication title第4回宇宙環境シンポジウム講演論文集
Proceedings of the 4th Spacecraft Environment Symposium
Start page51
End page57
Publication date2008-03-31
Languageeng
AbstractHighly energetic electrons in the outer radiation disappear during the main phase of the magnetic storm, and rebuilding of the highly energetic electrons is made during the recovery phase of the magnetic storm. A distribution of the new peak of highly energetic electron flux with respect to the distance from the Earth is inversely proportional to the magnitude of the magnetic storm. In case of the super storm, the outer electron belt is pushed toward the Earth, filling so-called slot region. It is of interest to identify that the location of the intense low frequency plasma waves, which appear during the storm recovery phase, coincides with the location of the peak intensity of the highly energetic electrons in the outer radiation belt. This coincidence strongly suggests that an internal acceleration process takes place which leads to a large increase in the intensity of highly energetic electrons in the outer radiation belt during the storm recovery phase. A seasonal variation of the outer radiation belt is identified. The increase in the intensity of the highly energetic electrons is large both in spring and autumn seasons. The magnetic activity is also large both in spring and autumn seasons. Correlation of the increase in the intensity of highly energetic electrons with the magnetic activity is identified. A solar cycle variation of the outer radiation belt is identified. The location of the outer radiation belt was found closer to the Earth during the solar maximum periods and far from the Earth during the solar minimum periods. This variation is due to the evidence that large magnetic storms occur largely during the solar maximum periods, while small magnetic storms take place largely during the solar minimum periods, resulting a long-term solar cycle variation with respect to the distance from the Earth.
DescriptionJAXA Special Publication
宇宙航空研究開発機構特別資料
Keywordshigh energy electron; Earth magnetosphere; outer radiation belt; magnetic storm; seasonal variation; solar cycle; plasma wave; satellite observation; geostationary transfer orbit; aerospace environment; Tsubasa; MDS-1; Mission Demonstration test Satellite-1; 高エネルギー電子; 地球磁気圏; 放射線帯外帯; 磁気嵐; 季節変動; 太陽周期; プラズマ波動; 衛星観測; 静止遷移軌道; 航空宇宙環境; つばさ; MDS-1; 民生部品・コンポーネント実証衛星
Document TypeConference Paper
JAXA Category特別資料
ISSN1349-113X
SHI-NOAA0063997005
Report NoJAXA-SP-07-030
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/32092


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