Journal of Geophysical Research: Space Physics 129(5) 2024年5月 [査読有り]
Abstract
We present the simultaneous and conjugated auroral emission and particle data obtained by a low‐altitude polar‐orbiting micro‐satellite, Reimei, for elucidating their latitudinal distributions and variations in the nightside auroral oval...
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 [査読有り]
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 [査読有り]
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 ...
We have developed a low-energy particle experiment that alternately measures ions and electrons in space. The ability to switch between ion and electron measurements is achieved by simply adding ultra-thin carbon foils and positive and n...
T. Namekawa   T. Mitani   K. Asamura   Y. Miyoshi   K. Hosokawa   M. Lessard   C. Moser   A. J. Halford   T. Sakanoi   M. Kawamura   M. Nose   R. Nomura   M. Teramoto   M. Shumko   K. A. Lynch   A. N. Jaynes   M. G. McHarg   
Geophysical Research Letters 50(24) 2023年12月 [査読有り]
Abstract
We have identified for the first time an energy‐time dispersion of precipitating electron flux in a pulsating aurora patch, ranging from 6.7 to 580 keV, through simultaneous in‐situ observations of sub‐relativistic electrons of microburs...