[P-EM11] Dynamics of Magnetosphere and Ionosphere

[PEM11-P24] Development of the medium-energy electron detector with hemispherical field-of-view and the flight test in the PARM (Pulsating AuRora and Microburst) mission

*Shin Sugo¹, Oya Kawashima¹, Kazushi Asamura², Reiko Nomura³, Yasunobu Ogawa⁴, Keisuke Hosokawa⁵, Yoshizumi Miyoshi⁶, Takefumi Mitani², Taku Namekawa^1,2, Takeshi Sakanoi⁷, Mizuki Fukizawa⁷, Naoshi Yagi⁷, Satoshi Kasahara¹ (1.The University of Tokyo, 2.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3.National Astronomical Observatory of Japan, 4.National Institute of Polar Research, 5.The University of Electro-Communications, 6.Institute for Space-Earth Environmental Research, Nagoya University, 7.Tohoku University)

Energetic electrons significantly affect ionospheric dynamics and the long-term evolution of surfaces and atmospheres of planets and moons. Since the energetic electron flux is not necessarily isotropic, it is important to cover the broad solid angle to quantitatively evaluate the effects on solar system bodies. With future planetary explorations in mind, we developed the medium-energy (20 - 100 keV) electron detector (MED) which can cover almost 2-pi steradian without the spacecraft spin. In order to test the performance of this analyzer in the relevant environment, we participated in the PARM mission, which aimed to measure electron precipitation using NASA’s sounding rocket RockSat-XN. In this presentation we report on MED observation results obtained through the flight on 13 January 2019.