Frontiers in Astronomy and Space Sciences 10 2023年2月
In this study, we use approximately 3 years of observations from the Exploration of energization and Radiation in Geospace (ERG/Arase) satellite to statistically study the meridional distribution of wave power from very-low-frequency (VLF) ground ...
K. Kawai   K. Shiokawa   Y. Otsuka   S. Oyama   M. G. Connors   Y. Kasahara   Y. Kasaba   S. Nakamura   F. Tsuchiya   A. Kumamoto   A. Shinbori   A. Matsuoka   I. Shinohara   Y. Miyoshi   
Journal of Geophysical Research: Space Physics 128(2) 2023年2月
Kawai et al. (2021) reported the first ground-satellite conjugate observation of nighttime medium-scale traveling ionospheric disturbances (MSTIDs), by analyzing measurements from an airglow imager at Gakona (geographic latitude: 62.39°N, geograph...
Hiroyuki Toyota   Iku Shinohara   
2019 EUROPEAN SPACE POWER CONFERENCE (ESPC) 2019年
We found that the solar panel output current of JAXA's Venus explorer Akatsuki is below values expected from percentage of shadow during penumbras. We also found that a similar phenomenon occurs in JAXA's Van Allen radiation belts explorer Arase d...