K.‐H. Kim   C.‐W. Jun   J.‐W. Kwon   J. Lee   K. Shiokawa   Y. Miyoshi   E.‐H. Kim   K. Min   J. Seough   K. Asamura   I. Shinohara   A. Matsuoka   S. Yokota   Y. Kasahara   S. Kasahara   T. Hori   K. Keika   A. Kumamoto   F. Tsuchiya   
Journal of Geophysical Research: Space Physics 129(5) 2024年5月
Abstract
This is the first report of significant energization (up to 7,000 eV) of low‐energy He+ ions, which occurred simultaneously with H‐band electromagnetic ion cyclotron (EMIC) wave activity, in a direction mostly perpendicular to...
K. Yamamoto   A. V. Rubtsov   D. V. Kostarev   P. N. Mager   D. Yu. Klimushkin   M. Nosé   A. Matsuoka   K. Asamura   Y. Miyoshi   S. Yokota   S. Kasahara   T. Hori   K. Keika   Y. Kasahara   A. Kumamoto   F. Tsuchiya   M. Shoji   S. Nakamura   I. Shinohara   
Geophysical Research Letters 51(8) 2024年4月
Abstract
We present the first direct evidence of an in situ excitation of drift‐compressional waves driven by drift resonance with ring current protons in the magnetosphere. Compressional Pc4–5 waves with frequencies of 4–12 mHz were observed by ...
Sai Zhang   Qinpei Yin   Hongming Yang   Fuliang Xiao   Qinghua Zhou   Qiwu Yang   Jiawen Tang   Zhoukun Deng   Yoshiya Kasahara   Yoshizumi Miyoshi   Atsushi Kumamoto   Yosuke Nakamura   Fuminori Tsuchiya   Iku Shinohara   Satoko Nakamura   Yasumasa Kasaba   Tomoaki Hori   
Geophysical Research Letters 51(5) 2024年2月
Abstract
Previous studies have shown that auroral kilometric radiation (AKR) can play an important role in the magnetosphere‐atmosphere coupling and has the right‐handed extraordinary (R‐X), left‐handed ordinary (L‐O) and left‐handed extraordinar...
Zhiyong Wu   Zhenpeng Su   Huinan Zheng   Yuming Wang   Yoshizumi Miyoshi   Iku Shinohara   Ayako Matsuoka   Yoshiya Kasahara   Fuminori Tsuchiya   Atsushi Kumamoto   Shoya Matsuda   Yasumasa Kasaba   Mariko Teramoto   Tomoaki Hori   
Geophysical Research Letters 51(4) 2024年2月
Abstract
Plasmaspheric hiss waves are important to shape the Earth’s electron radiation belt. These waves are commonly envisioned to have a long lifetime which allows them to permeate the global plasmasphere from a spatially restricted source. Ho...
Bernhard Haas   Yuri Y. Shprits   Michael Wutzig   Mátyás Szabó-Roberts   Marina García Peñaranda   Angelica M. Castillo Tibocha   Julia Himmelsbach   Dedong Wang   Yoshizumi Miyoshi   Satoshi Kasahara   Kunihiro Keika   Shoichiro Yokota   Iku Shinohara   Tomo Hori   
Scientific Reports 14(1) 2024年1月
Abstract
The hazardous plasma environment surrounding Earth poses risks to satellites due to internal charging and surface charging effects. Accurate predictions of these risks are crucial for minimizing damage and preparing for system failures o...