宇宙科学研究所研究者総覧

研究キーワード

地球惑星磁気圏・オーロラ物理 ,プラズマ粒子・中性粒子観測器開発 ,地球惑星磁気圏・電離圏観測、惑星間空間観測

研究分野

自然科学一般 / 宇宙惑星科学 /

経歴

2019年6月

-

現在

国立研究開発法人宇宙航空研究開発機構准教授

1999年4月

文部省宇宙科学研究所助手

学歴

1995年4月

-

1997年3月

京都大学理学研究科地球惑星科学専攻

1991年4月

-

1995年3月

京都大学理学部

委員歴

2022年4月

-

現在

情報・システム研究機構国立極地研究所南極観測アドバイザー

2019年4月

-

現在

地球電磁気・地球惑星圏学会運営委員

2020年4月

-

2022年3月

情報・システム研究機構国立極地研究所宙空圏専門部会委員

論文

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The variable source of the plasma sheet during a geomagnetic storm

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 [査読有り]

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...

Correspondence of Pi2 pulsations, aurora luminosity, and plasma flux fluctuation near a substorm brightening aurora: Arase observations

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 [査読有り]

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...

Plasma pressure distribution of ions and electrons in the inner magnetosphere during CIR driven storms observed during Arase era

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 [査読有り]

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...

Direct evidence of substorm-related impulsive injections of electrons at Mercury

Sae Aizawa Yuki Harada Nicolas André Yoshifumi Saito Stas Barabash Dominique Delcourt Jean-André Sauvaud Alain Barthe Andréi Fedorov Emmanuel Penou Shoichiro Yokota Wataru Miyake Moa Persson Quentin Nénon Mathias Rojo Yoshifumi Futaana Kazushi Asamura Manabu Shimoyama Lina Z. Hadid Dominique Fontaine Bruno Katra Markus Fraenz Norbert Krupp Shoya Matsuda Go Murakami

Nature Communications 14(1) 2023年7月 [査読有り]

Abstract

Mercury’s magnetosphere is known to involve fundamental processes releasing particles and energy like at Earth due to the solar wind interaction. The resulting cycle is however much faster and involves acceleration, transport, loss, and ...

Statistical Study of EMIC Waves and Related Proton Distributions Observed by the Arase Satellite

C.‐W. Jun Y. Miyoshi S. Nakamura M. Shoji M. Kitahara T. Hori C. Yue J. Bortnik L. Lyons K. Min Y. Kasahara F. Tsuchiya A. Kumamoto K. Asamura I. Shinohara A. Matsuoka S. Imajo S. Yokota S. Kasahara K. Keika

Journal of Geophysical Research: Space Physics 2023年5月 [査読有り]