GEO-X (GEOspace x-ray imager)

Yuichiro Ezoe; Ryu Funase; Harunori Nagata; Yoshizumi Miyoshi; Satoshi Kasahara; Hiroshi Nakajima; Ikuyuki Mitsuishi; Kumi Ishikawa; Junko Hiraga; Kazuhisa Mitsuda; Masaki Fujimoto; Munetaka Ueno; Atsushi Yamazaki; Hiroshi Hasegawa; Yosuke Matsumoto; Yasuhiro Kawakatsu; Takahiro Iwata; Hironori Sahara; Yoshiaki Kanamori; Kohei Morishita; Hiroyuki Koizumi; Makoto Mita; Takefumi Mitani; Masaki Numazawa; Landon Kamps; Yusuke Kawabata

doi:10.1117/12.2560780

13 December 2020 GEO-X (GEOspace x-ray imager)

Yuichiro Ezoe, Ryu Funase, Harunori Nagata, Yoshizumi Miyoshi, Satoshi Kasahara, Hiroshi Nakajima, Ikuyuki Mitsuishi, Kumi Ishikawa, Junko Hiraga, Kazuhisa Mitsuda, Masaki Fujimoto, Munetaka Ueno, Atsushi Yamazaki, Hiroshi Hasegawa, Yosuke Matsumoto, Yasuhiro Kawakatsu, Takahiro Iwata, Hironori Sahara, Yoshiaki Kanamori, Kohei Morishita, Hiroyuki Koizumi, Makoto Mita, Takefumi Mitani, Masaki Numazawa, Landon Kamps, Yusuke Kawabata

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Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 1144428 (2020) https://doi.org/10.1117/12.2560780
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

GEO-X (GEOspace X-ray imager) is a 50 kg-class small satellite to image the global Earth’s magnetosphere in X-rays via solar wind charge exchange emission. A 12U CubeSat will be injected into an elliptical orbit with an apogee distance of ∼40 Earth radii. In order to observe the diffuse soft X-ray emission in 0.3-2 keV and to verify X-ray imaging of the dayside structures of the magnetosphere such as cusps, magnetosheaths and magnetopauses which are identified statistically by in-situ satellite observations, an original light-weight X-ray imaging spectrometer (∼10 kg, ∼10 W, ∼10×10×30 cm) will be carried. The payload is composed of a ultra light-weight MEMS Wolter type-I telescope (∼4×4 deg² FOV, <10 arcmin resolution) and a high speed CMOS sensor with a thin optical blocking filter (∼2×2 cm² , frame rate ∼20 ms, energy resolution <80 eV FWHM at 0.6 keV). An aimed launch year is 2023-25 corresponding to the 25th solar maximum.

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Yuichiro Ezoe, Ryu Funase, Harunori Nagata, Yoshizumi Miyoshi, Satoshi Kasahara, Hiroshi Nakajima, Ikuyuki Mitsuishi, Kumi Ishikawa, Junko Hiraga, Kazuhisa Mitsuda, Masaki Fujimoto, Munetaka Ueno, Atsushi Yamazaki, Hiroshi Hasegawa, Yosuke Matsumoto, Yasuhiro Kawakatsu, Takahiro Iwata, Hironori Sahara, Yoshiaki Kanamori, Kohei Morishita, Hiroyuki Koizumi, Makoto Mita, Takefumi Mitani, Masaki Numazawa, Landon Kamps, and Yusuke Kawabata "GEO-X (GEOspace x-ray imager)", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 1144428 (13 December 2020); https://doi.org/10.1117/12.2560780

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KEYWORDS

X-ray imaging

X-rays

X-ray astronomy

Satellites

X-ray optics

X-ray technology

Magnetosphere

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