日本地球惑星科学連合2019年大会

講演情報

[E] 口頭発表

セッション記号 P (宇宙惑星科学) » P-CG 宇宙惑星科学複合領域・一般

[P-CG21] 宇宙・惑星探査の将来計画と関連する機器開発の展望

2019年5月26日(日) 10:45 〜 12:15 A01 (東京ベイ幕張ホール)

コンビーナ:尾崎 光紀(金沢大学理工研究域電子情報学系)、笠原 慧(東京大学)、亀田 真吾(立教大学理学部)、吉岡 和夫(東京大学大学院新領域創成科学研究科)、座長:笠原 慧尾崎 光紀(金沢大学)

10:45 〜 11:05

[PCG21-06] Satellite mission: PhoENiX (Physics of Energetic and Non-thermal plasmas in the X (= magnetic reconnection) region)

★Invited Papers

*成影 典之1岡 光夫2深沢 泰司3松崎 恵一4渡辺 伸4坂尾 太郎4石川 真之介5萩野 浩一6三石 郁之5水野 恒史3篠原 育4下条 圭美1高棹 真介5田辺 博士7上野 宗孝8高橋 忠幸9高島 健4太田 方之4 (1.国立天文台、2.カリフォルニア大学バークレー校、3.広島大学、4.宇宙航空研究開発機構、5.名古屋大学、6.東京理科大学、7.東京大学、8.神戸大学、9.カブリ数物連携宇宙研究機構)

キーワード:PhoENiX、粒子加速、磁気再結合、太陽フレア、X線、撮像分光観測

We are planning a new solar satellite mission, "PhoENiX", for understanding of particle acceleration during magnetic reconnection, which are ubiquitous features exhibited by a wide range of plasmas in the universe. The main observation targets of this mission are solar flares, which are generated by magnetic reconnection and accelerate plasma particles. The sun is a unique target in the sense that it can be investigated in great detail with good spatial, temporal and energy resolutions.
The scientific objectives of this mission are (1) to identify particle acceleration sites, (2) to investigate temporal evolution of particle acceleration, and (3) to characterize properties of accelerated particles, during solar flares. In order to achieve these science objectives, the PhoENiX satellite is planned to be equipped with three instruments of (1) Photon-counting type focusing-imaging spectrometer in soft X-rays (up to ~10 keV) to observe the contexts of particle accelerations (e.g., shocks, plasmoids, flows, etc.), (2) Photon-counting type focusing-imaging spectrometer in hard X-rays (up to ~30 keV) to identify the accelerated particles, and (3) Spectropolarimeter in soft gamma-rays (spectroscopy is available in the energy range of from > 20 keV to < 600 keV; spectropolarimetry is available from > 60 keV to < 600 keV) to detect the anisotropy of accelerated particles. We plan to realize PhoENiX satellite mission around next solar maximum (around 2025).
The basic developments of key technologies for these instruments have been completed. The soft X-ray imaging spectroscopy is planned to be realized with the combination of high-precision glass-polished X-ray mirrors and high-speed CMOS cameras. The hard X-ray imaging spectroscopy consists of high-precision electroforming X-ray mirrors and CdTe cameras. The soft gamma-ray spectropolarimeter is a redesigned instrument of Hitomi / Soft Gamma-ray Detector (SGD) that has Compton cameras with active shields. Some of these technologies required for the X-ray imaging spectroscopy have been demonstrated by FOXSI sounding rocket series launched in 2012, 2014 and 2018. The FOXSI successfully obtained the focusing imaging spectroscopic data of the solar corona in X-rays (from ~0.5 keV to ~15 keV).
In this presentation, we explain the details of science goal and objectives, and instruments of PhoENiX mission.