Three-year of observations of Jupiter's aurora and Io plasma torus variabilities by earth orbiting extreme-ultraviolet spectroscope HISAKI

Frontiers in Theoretical and Applied Physics/UAE 2017

Tsuchiya, F.^1 ; Yoshioka, K.^2 ; Kimura, T.^3 ; Murakami, G.^4 ; Tao, C.^5 ; Kita, H.^1,6 ; Yoshikawa, I.^7 ; Yamazaki, A.^4 ; Kasaba, Y.^6

Planetary Plasma and Atmospheric Research Center, Tohoku University, Sendai, Japan^1

Graduate School of Science, University of Tokyo, Tokyo, Japan^2

Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama, Japan^3

Institute of Space and Astronautical Science, Aerospace Exploration Agency, Sagamihara, Japan^4

National Institute of Information and Communication Technology, Koganei, Japan^5

Graduate School of Science, Tohoku University, Sendai, Japan^6

Department of Complexity Science and Engineering, University of Tokyo, Kashiwa, Japan^7

关键词: Data set;    Extreme Ultraviolet;    Jupiters;    Planetary magnetosphere;    Plasma emission;    Plasma torus;    Time variability;    Time-scales;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012069/pdf
DOI  :  10.1088/1742-6596/869/1/012069

来源: IOP

【 摘 要 】

Extreme Ultraviolet spectrograph, EXCEED, on-board the HISAKI satellite is designed for observing tenuous gas and plasma around planets in the solar system. It enables us to obtain continuous and long-term data set and find time variability in the planetary magnetosphere and ionosphere with time scales of several hours to months. Here, we introduce new findings of Jupiter's UV aurora and plasma emissions from the Io plasma torus obtained from the HISAKI observation.