L. M. Kistler K. Asamura S. Kasahara Y. Miyoshi C. G. Mouikis K. Keika S. M. Petrinec M. L. Stevens T. Hori S. Yokota I. Shinohara
Nature Communications 14(1) 2023年10月
Abstract
Both solar wind and ionospheric sources contribute to the magnetotail plasma sheet, but how their contribution changes during a geomagnetic storm is an open question. The source is critical because the plasma sheet properties control the...
A. V. Rubtsov M. Nosé A. Matsuoka Y. Kasahara A. Kumamoto F. Tsuchiya I. Shinohara Y. Miyoshi
Journal of Geophysical Research: Space Physics 128(10) 2023年10月
Abstract
Magnetic storms and substorms cause global disturbances in the Earth's magnetosphere. Plasma clouds injected from the magnetotail during storm or substorm drift around the Earth and generate ultra‐low frequency (ULF) waves via various me...
L. Chen K. Shiokawa Y. Miyoshi S. Oyama C‐W. Jun Y. Ogawa K. Hosokawa Y. Kazama S. Y. Wang S. W. Y. Tam T. F. Chang B. J. Wang K. Asamura S. Kasahara S. Yokota T. Hori K. Keika Y. Kasaba A. Kumamoto F. Tsuchiya M. Shoji Y. Kasahara A. Matsuoka I. Shinohara S. Nakamura
Journal of Geophysical Research: Space Physics 128(10) 2023年9月
Abstract
Although many substorm‐related observations have been made, we still have limited insight into propagation of the plasma and field perturbations in Pi2 frequencies (∼7‐25 mHz) in association with substorm aurora, particularly from the au...
Sandeep Kumar Y. Miyoshi V. Jordanova L. M. Kistler I. Park C. Jun T. Hori K. Asamura Shreedevi P. R S. Yokota S. Kasahara Y. Kazama S.‐Y. Wang Sunny W. Y. Tam Tzu‐Fang Chang T. Mitani N. Higashio K. Keika A. Matsuoka S. Imajo I. Shinohara
Journal of Geophysical Research: Space Physics 2023年9月
Abstract
Using Arase observations of the inner magnetosphere during 26 CIR‐driven geomagnetic storms with minimum Sym‐H between ‐33 and ‐86 nT, we investigated ring current pressure development of ions (H+, He+, O+</sup...
S. Nanjo S. Ebukuro S. Nakamura Y. Miyoshi S. Kurita S.‐I. Oyama Y. Ogawa K. Keika Y. Kasahara S. Kasahara A. Matsuoka T. Hori S. Yokota S. Matsuda I. Shinohara S.‐Y. Wang Y. Kazama C.‐W. Jun M. Kitahara K. Hosokawa
Journal of Geophysical Research: Space Physics 128(8) 2023年8月 [査読有り]
Abstract
A physical mechanism to produce pulsating aurora (PsA) has been considered to be the interaction of the electron and the chorus wave generated near the equatorial plane of the magnetosphere. A recent observation of high temporal resoluti...
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...
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