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アイテム
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JSR indicates long-term (11 year) and short-term (day to weeks) variation. The short-term variation is not studied well because of the lack of continuous observation, while the long-term variation is well studied. Then we have observed JSR for several months a year since 1994 to reveal characteristics of the flux variations especially at short-term and long-term time variations. The regular observations have been made at a frequency of 327 MHz by using parabolic cylinder antennas of the Solar Terrestrial Environment Laboratory (STEL), Nagoya University. The observed JSR flux includes apparent variation due to inevitable system gain variation of the radio receiving system. 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Characteristics of long and short term variations of the Jovian synchrotron radiation at a frequency of 327 MHz
https://jaxa.repo.nii.ac.jp/records/20570
https://jaxa.repo.nii.ac.jp/records/20570e55d3a0a-556a-4dac-8696-c90c3e94caf3
Item type | 会議発表論文 / Conference Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Characteristics of long and short term variations of the Jovian synchrotron radiation at a frequency of 327 MHz | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星大気 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 木星 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 木星磁気圏 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星磁気圏 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | シンクロトロン放射 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 放射線帯 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 相対論的電子 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 高エネルギー粒子 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 経時変化 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 太陽活動 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 太陽風 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary atmosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Jupiter | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Jovian magnetosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary magnetosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | synchrotron radiation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | radiation belt | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | relativistic electron | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | energetic particle | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | temporal variation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | solar activity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | solar wind | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
野村, 詩穂
× 野村, 詩穂× 三澤, 浩昭× 土屋, 史紀× 森岡, 昭× Nomura, Shiho× Misawa, Hiroaki× Tsuchiya, Fuminori× Morioka, Akira |
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著者所属 | ||||||
東北大学 大学院理学研究科 | ||||||
著者所属 | ||||||
東北大学 大学院理学研究科 | ||||||
著者所属 | ||||||
東北大学 大学院理学研究科 | ||||||
著者所属 | ||||||
東北大学 大学院理学研究科 | ||||||
著者所属(英) | ||||||
en | ||||||
Tohoku University Graduate School of Science | ||||||
著者所属(英) | ||||||
en | ||||||
Tohoku University Graduate School of Science | ||||||
著者所属(英) | ||||||
en | ||||||
Tohoku University Graduate School of Science | ||||||
著者所属(英) | ||||||
en | ||||||
Tohoku University Graduate School of Science | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構宇宙科学研究本部 | |||||
出版者(英) | ||||||
出版者 | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) | |||||
書誌情報 |
第38回月・惑星シンポジウム en : Proceedings of the 38th ISAS Lunar and Planetary Symposium p. 204-207, 発行日 2006-03 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Jovian Synchrotron Radiation (JSR) is a radio wave emitted from the relativistic electrons in the Jovian radiation belt, which has information of dynamics of high-energy particles and electromagnetic disturbances in the Jovian inner magnetosphere. JSR indicates long-term (11 year) and short-term (day to weeks) variation. The short-term variation is not studied well because of the lack of continuous observation, while the long-term variation is well studied. Then we have observed JSR for several months a year since 1994 to reveal characteristics of the flux variations especially at short-term and long-term time variations. The regular observations have been made at a frequency of 327 MHz by using parabolic cylinder antennas of the Solar Terrestrial Environment Laboratory (STEL), Nagoya University. The observed JSR flux includes apparent variation due to inevitable system gain variation of the radio receiving system. In order to compensate the system gain variation, we have evaluated system gain using a flux reference radio source that was observed quasi-simultaneously with Jupiter, and made additional observations of 'actual' galactic Back-Ground radiation (BG) with the highly stable radio receiving system of Tohoku University. As the result, we derived the JSR flux densities for 1994-2003 successfully and confirmed significant flux variations in both short and long time scales. In this paper, we report the results of the JSR observations for 1994-2003 and infer causalities of the variations based on correlation analyses between the JSR flax variations and parameters of the solar activity and solar wind. | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0063350055 |