@inproceedings{e1a37b3376e14fb39ad9b4ab7b0d2090,
title = "GEO-X (GEOspace X-ray imager)",
abstract = "GEO-X (GEOspace X-ray imager) is a small satellite mission aiming at visualization of the Earth{\textquoteright}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 RE from relatively low-altitude (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.",
keywords = "Earth{\textquoteright}s magnetosphere, Small satellite, X-rays",
author = "{the GEO-X team} and Yuichiro Ezoe and Ryu Funase and Harunori Nagata and Yoshizumi Miyoshi and Hiroshi Nakajima and Ikuyuki Mitsuishi and Kumi Ishikawa and Yosuke Kawabata and Shintaro Nakajima and Landon Kamps and Masaki Numazawa and Tomokage Yoneyama and Kouichi Hagino and Yosuke Matsumoto and Keisuke Hosokawa and Satoshi Kasahara and Junko Hiraga and Kazuhisa Mitsuda and Masaki Fujimoto and Munetaka Ueno and Atsushi Yamazaki and Hiroshi Hasegawa and Takefumi Mitani and Yasuhiro Kawakatsu and Takahiro Iwata and Hiroyuki Koizumi and Hironori Sahara and Yoshiaki Kanamori and Kohei Morishita",
note = "Funding Information: This work is supported by MEXT KAKENHI grant number 21H0497 and 20B206, and Tokyo Metropolitan University Grant-in-Aid for Young Scientists : Priority research. The authors deeply thank Prof. G. Branduardi-Raymont, Dr. D. Sibeck, Dr. S. Sembay, Dr. W. Chi, Dr. William Dunn, Dr. Konrad Dennerl, Dr. Anil Bhardwaj, Dr. Hiroshi Nagaoka, Dr. Satoru Katsuda, Dr. Kunihiro Keika, Dr. Iku Shinohara, Dr. Masaki Kuwabara, Dr. Shinsuke Imada and the ISSI-Bern 2013 and the ISSI-Beijin 2016 team members for fruitful discussion. Publisher Copyright: {\textcopyright} 2022 SPIE. All rights reserved.; Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray ; Conference date: 17-07-2022 Through 22-07-2022",
year = "2022",
doi = "10.1117/12.2629107",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "{den Herder}, {Jan-Willem A.} and Shouleh Nikzad and Kazuhiro Nakazawa",
booktitle = "Space Telescopes and Instrumentation 2022",
}