フォロー
Ryoichi Koga
Ryoichi Koga
Nagoya University
確認したメール アドレス: pparc.gp.tohoku.ac.jp
タイトル
引用先
引用先
Enhancement of the Jovian magnetospheric plasma circulation caused by the change in plasma supply from the satellite Io
F Tsuchiya, K Yoshioka, T Kimura, R Koga, G Murakami, A Yamazaki, ...
Journal of Geophysical Research: Space Physics 123 (8), 6514-6532, 2018
262018
The time variation of atomic oxygen emission around Io during a volcanic event observed with Hisaki/EXCEED
R Koga, F Tsuchiya, M Kagitani, T Sakanoi, M Yoneda, K Yoshioka, ...
Icarus 299, 300-307, 2018
262018
Azimuthal variation in the Io plasma torus observed by the Hisaki satellite from 2013 to 2016
F Tsuchiya, R Arakawa, H Misawa, M Kagitani, R Koga, F Suzuki, ...
Journal of Geophysical Research: Space Physics 124 (5), 3236-3254, 2019
192019
Spatial distribution of Io's neutral oxygen cloud observed by Hisaki
R Koga, F Tsuchiya, M Kagitani, T Sakanoi, M Yoneda, K Yoshioka, ...
Journal of Geophysical Research: Space Physics 123 (5), 3764-3776, 2018
182018
Transient change of Io's neutral oxygen cloud and plasma torus observed by Hisaki
R Koga, F Tsuchiya, M Kagitani, T Sakanoi, K Yoshioka, I Yoshikawa, ...
Journal of Geophysical Research: Space Physics 124 (12), 10318-10331, 2019
122019
Insight into Io enabled by characterization of its neutral oxygen torus
HT Smith, R Koga, F Tsuchiya, VJ Dols
Journal of Geophysical Research: Space Physics 127 (8), e2022JA030581, 2022
32022
Infrared absorption and its sources of CdZnTe at cryogenic temperature
H Maeshima, K Matsumoto, Y Hirahara, T Nakagawa, R Koga, ...
Journal of Electronic Materials 51 (2), 564-576, 2022
22022
Io's volcanic influence on the Io plasma torus: HISAKI observation in 2015
F Tsuchiya, K Yoshioka, T Kimura, G Murakami, M Yoneda, R Koga, ...
AGU Fall Meeting Abstracts 2015, SM31B-2489, 2015
22015
UV irradiation and infrared observation of sulfur dioxide clusters and solids at cryogenic temperature
F Ito, R Koga, S Negishi, Y Hirahara
Chemical Physics Letters 829, 140742, 2023
12023
ALMA Observation of SO2 Gas Originating from Io’s Volcanic Plume and Lava Areas
R Koga, T Suzuki, F Tsuchiya, T Sakanoi, Y Hirahara
The Astrophysical Journal Letters 907 (1), L6, 2021
12021
Variation of ion and electron temperature on Io plasma torus during an outburst measured with Hisaki
M Kagitani, M Yoneda, R Koga, F Tsuchiya, K Yoshioka, G Murakami, ...
EXCEED and gourd-based telescope, Magnetospheres of the Outer Planets (MOP …, 2017
12017
Variations in Io's volcanism seen in Jupiter's sodium nebula, Io plasma torus and thermal infrared emissions
M Yoneda, F Tsuchiya, K de Kleer, M Kagitani, T Sakanoi, R Koga, ...
AGU Fall Meeting Abstracts, P23C-2180, 2016
12016
Mass supply from Io to Jupiter's magnetosphere
L Roth, A Blöcker, K de Kleer, D Goldstein, E Lellouch, J Saur, C Schmidt, ...
arXiv preprint arXiv:2403.13970, 2024
2024
Mid-infrared imaging spectroscopic measurements of C2H4 frost simulating the outer solar system environments
R Koga, S Negishi, B Zhao, Y Li, F Ito, Y Kasaba, Y Hirahara
Earth, Planets and Space 76 (1), 31, 2024
2024
Analysis of geocoronal variation in 2014 using HISAKI satellite UV observation data
R Koga, F Tsuchiya, S Sakai, G Murakami, A Yamazaki, T Kimura, ...
AGU23, 2023
2023
Major results from the Hisaki mission and future perspectives
F Tsuchiya, Y Kasaba, I Yoshikawa, G Murakami, A Yamazaki, ...
EGU General Assembly Conference Abstracts, EGU-4751, 2023
2023
A Current Picture of Neutral Tori at Outer Planetary Systems: Unique Insight into Large Magnetospheres
HT Smith, JR Szalay, R Koga, RE Johnson, F Tsuchiya
AGU Fall Meeting Abstracts 2022, SM43B-06, 2022
2022
A current picture of neutral tori at outer planetary systems: unique insight into moon-magnetospheric interactions
J Szalay, R Koga, R Johnson, F Tsuchiya
EPSC2022, 2022
2022
The immerging dynamic and multiple neutral tori systems of Jupiter
H Smith, J Szalay, B Mauk, R Koga, R Johnson, F Tsuchiya
AGU Fall Meeting Abstracts 2021, SM44B-07, 2021
2021
Io plasma torus and Jovian aurora activity during the Juno era: Current status of Hisaki/EXCEED
F Tsuchiya, I Yoshikawa, A Yamazaki, K Yoshioka, T Kimura, G Murakami, ...
AGU Fall Meeting Abstracts 2020, SM056-0004, 2020
2020
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