GEO-X (GEOspace x-ray imager)
GEO-X (GEOspace x-ray imager)
复制标题
GEO-X（GEOspace X 射线成像仪）
DOI：
10.1117/12.2629107
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Kasahara Satoshi
中科院分区：
文献类型：
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作者：
Ezoe Yuichiro;Funase Ryu;Nagata Harunori;Miyoshi Yoshizumi;Nakajima Hiroshi;Mitsuishi Ikuyuki;Ishikawa Kumi;Kawabata Yosuke;Nakajima Shintaro;Kamps Landon;Numazawa Masaki;Yoneyama Tomokage;Hagino Kouichi;Matsumoto Yosuke;Hosokawa Keisuke;Kasahara Satoshi
GEO-X（GEOspace X射线成像仪）是一个小型卫星使命，目的是通过X射线使地球磁层可视化，并揭示太阳风与磁层之间的动态耦合。实地航天器揭示了磁层中的各种现象。近年来，X射线天文卫星观测发现了起源于磁层的软X射线辐射。因此，我们通过整合宽视场X射线仪器的创新技术和用于深空探测的微卫星技术来开发GEO-X。GEO-X是一颗50公斤级微型卫星，携带一个新型紧凑型X射线成像光谱仪有效载荷。微卫星具有大的Δ v（<700 m/s），以从相对低的高度（例如，地球转移轨道）搭载发射是必要的。因此，我们结合联合收割机的18 U立方体与混合踢发动机组成的液体N2 O和聚乙烯。我们还开发了一个宽视场（5×5度）和良好的空间分辨率（10弧分）的X射线（0.3-2 keV）成像仪。我们利用一个微机械X射线望远镜，和一个CMOS检测器系统与光学阻挡过滤器。我们的目标是在第25个太阳活动高峰期发射卫星。
GEO-X (GEOspace X-ray imager) is a small satellite mission aiming at visualization of the Earth’s magnetosphere by X-rays and revealing dynamical couplings between solar wind and magnetosphere. In-situ spacecraft have revealed various phenomena in the magnetosphere. In recent years, X-ray astronomy satellite observations discovered soft X-ray emission originated from the magnetosphere. We therefore develop GEO-X by integrating innovative technologies of the wide FOV X-ray instrument and the microsatellite technology for deep space exploration. GEO-X is a 50 kg class microsatellite carrying a novel compact X-ray imaging spectrometer payload. The microsatellite having a large delta v (<700 m/s) to increase an altitude at 40-60 REfrom relatively lowaltitude (e.g., Geo Transfer Orbit) piggyback launch is necessary. We thus combine a 18U Cubesat with the hybrid kick motor composed of liquid N2O and polyethylene. We also develop a wide FOV (5×5 deg) and a good spatial resolution (10 arcmin) X-ray (0.3-2 keV) imager. We utilize a micromachined X-ray telescope, and a CMOS detector system with an optical blocking filter. We aim to launch the satellite around the 25th solar maximum.