[P-CG20] 宇宙・惑星探査の将来計画および関連する機器開発の展望

[PCG20-13] IMPACT Project: A Microsatellite Mission to Investigate Ducting Magnetospheric Plasma Wave Activity

★Invited Papers

*松田 昇也¹、八木谷 聡¹、米徳 大輔¹、笠原 禎也¹、井町 智彦¹、莊司 泰弘¹、澤野 達哉¹、有元 誠¹、尾崎 光紀¹、木邑 真理子¹、加藤 雄人²、熊本 篤志²、笠原 慧³、小嶋 浩嗣⁴、栗田 怜⁴、大村 善治⁴、三好 由純⁵、寺本 万里子⁶、北村 健太郎⁶、齊藤 慎司⁷、篠原 育⁸、浅村 和史⁸、三谷 烈史⁸ (1.金沢大学、2.東北大学、3.東京大学、4.京都大学、5.名古屋大学、6.九州工業大学、7.情報通信研究機構、8.宇宙航空研究開発機構/宇宙科学研究所)

キーワード：Microsatellite mission、Plasma waves、Space weather

The IMPACT project is a microsatellite project aimed at clarifying the formation mechanisms of density ducts in the terrestrial inner magnetosphere and wave-particle interactions induced by plasma waves propagating through these ducts. This project was selected for the JAXA-SMASH (JAXA-Small Satellite Rush) Program in February 2025, and the development of the microsatellite is ongoing by early 2027. This satellite is a W6U-size CubeSat and carries three scientific instruments: a small plasma wave detector (DPS), a small high-energy electron detector (LEON), and a small impedance probe (NEI). This instrument suite provides direct measurements of the density duct structure, plasma waves propagating through the ducts, and radiation belt electrons scattered by electromagnetic ion cyclotron waves traveling through the ducts. The satellite system is controlled by AI-OBC, which is an onboard computer equipped with a dynamically reconfigurable processor. AI-OBC enables high-speed inference using deep learning models in space to detect duct structures and plasma waves. In this study, we will introduce the overview of the IMPACT project and the latest updates.