Soft-X ray emissions from Geospace: Possible science objectives of GEO-X

Yoshizumi Miyoshi, Yosuke Matsumoto, Yuichiro Ezoe

Presentation information

[E] Poster

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM08] Space Weather and Space Climate

Sat. Jun 5, 2021 5:15 PM - 6:30 PM Ch.03

convener:Ryuho Kataoka(National Institute of Polar Research), A Antti Pulkkinen(NASA Goddard Space Flight Center), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University), Kaori Sakaguchi(National Institute of Information and Communications Technology)

5:15 PM - 6:30 PM

[PEM08-P21] Soft-X ray emissions from Geospace: Possible science objectives of GEO-X

*Yoshizumi Miyoshi¹, Yosuke Matsumoto², Yuichiro Ezoe³ (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Chiba University, 3.Tokyo Metropolitan University)

Keywords:solar wind-magnetosphere coupling, soft-Xray emissions

Recent studies have indicated that charge-exchange between geocorona and
On+ ions of the solar wind causes the soft-X ray emission. The soft-X ray
emission can be used as a tool to measure global topology of Geospace.
In order to investigate how we can observe the soft-X ray emissions, we conduct
a computer simulation by a code coupling of the global magnetospheric MHD
simulation model (Matsumoto+, 2010) and empirical geocorona model. The
simulation shows clear emissions from the dayside sheath region as well as the cusp region.
The new satellite project GEO-X has been proposed to measure the
soft-X ray emission through solar wind charge exchange (SWCX) from the
dayside magnetosphere. In this presentation, we show the possible
soft-X ray images by the computer simulation, by considering the GEO-X
satellite orbit.