K. Yoshioka   Y. Miyoshi   S. Kurita   M. Teramoto   F. Tsuchiya   A. Yamazaki   G. Murakami   T. Kimura   H. Kita   I. Yoshikawa   Y. Kasaba   
Space Weather 19(1) 2021年1月 [査読有り]
The energetic particles in the Earth's radiation belt are known to fluctuate over various timescales. Although observations using satellites have been made for more than 50 years, there are few examples of continuous and long-term observations at ...
K. Masunaga   K. Yoshioka   M. S. Chaffin   J. Deighan   S. K. Jain   N. M. Schneider   T. Kimura   F. Tsuchiya   G. Murakami   A. Yamazaki   N. Terada   I. Yoshikawa   
Journal of Geophysical Research: Planets 125(12) 2020年12月 [査読有り]
We present variations of oxygen 130.4 nm and hydrogen Ly-β airglow of the Martian upper atmosphere observed by the Hisaki spacecraft in the Earth orbit. In 5-year intermittent observations covering various Mars seasons, the 130.4 nm brightness var...
Mercury has a unique and complex space environment with its weak global magnetic field, intense solar wind, tenuous exosphere, and magnetospheric plasma particles. This complex system makes Mercury an excellent science target to understand effects...
Fuminori Tsuchiya   Yasumasa Kasaba   Ichiro Yoshikawa   Go Murakami   Atsushi Yamazaki   Kazuo Yoshioka   Tomoki Kimura   Chihiro Tao   Ryoichi Koga   Hajime Kita   Kei Masunaga   Masato Kagitani   Shotaro Sakai   Masaki Kuwabara   
Abstract EGU 2023 2023年5月 [招待有り]
Hisaki is an earth orbiting extreme ultraviolet spectroscope dedicated for observing solar system planets. Thanks to its monitoring capability, Hisaki has carried out unprecedented continuous observation of Io plasma torus, Jovian aurora, and Mars...