[P-EM12] Space Weather, Space Climate, and VarSITI

[PEM12-06] Flux evolutions of relativistic electrons of the outer radiation belt as seen from the first year observation of Arase

★Invited Papers

*三好 由純¹、栗田 怜¹、片岡 龍峰²、三谷 烈史³、高島 健³、東尾 奈々³、笠原 慧⁴、横田 勝一郎⁵、寺本 万里子¹、堀 智昭¹、笠原 禎也⁶、松田 昇也¹、熊本 篤志⁷、土屋 史紀⁷、小路 真史¹、松岡 彩子³、篠原 育³ (1.名古屋大学宇宙地球環境研究所、2.国立極地研究所、3.宇宙研究開発機構、4.東京大学、5.大阪大学、6.金沢大学、7.東北大学)

キーワード：放射線帯、太陽風-放射線帯相互作用

The Arase satellite was successfully launched in December 2016 and then started the regular observations from March 2017. Since then, the Arase satellite observed several magnetic storms and flux evolutions driven by CMEs and CIRs. For the CIR-driven storms, large flux enhancements were sometimes observed during the period of coronal-hole high speed streams, and dependences of the Russel-McPherron effects are found in these events. The Arase also observed three CME-driven storms, and one of the severe magnetic storms with minimum Dst index of -142 nT was observed in early September. In this presentation, we will discuss the relationship between the flux enhancements and chorus wave activities derived from Arase/PWE measurements and the low-altitude satellite data.