TY - JOUR
T1 - Visualization of rapid electron precipitation via chorus element wave–particle interactions
AU - Ozaki, Mitsunori
AU - Miyoshi, Yoshizumi
AU - Shiokawa, Kazuo
AU - Hosokawa, Keisuke
AU - Oyama, Shin ichiro
AU - Kataoka, Ryuho
AU - Ebihara, Yusuke
AU - Ogawa, Yasunobu
AU - Kasahara, Yoshiya
AU - Yagitani, Satoshi
AU - Kasaba, Yasumasa
AU - Kumamoto, Atsushi
AU - Tsuchiya, Fuminori
AU - Matsuda, Shoya
AU - Katoh, Yuto
AU - Hikishima, Mitsuru
AU - Kurita, Satoshi
AU - Otsuka, Yuichi
AU - Moore, Robert C.
AU - Tanaka, Yoshimasa
AU - Nosé, Masahito
AU - Nagatsuma, Tsutomu
AU - Nishitani, Nozomu
AU - Kadokura, Akira
AU - Connors, Martin
AU - Inoue, Takumi
AU - Matsuoka, Ayako
AU - Shinohara, Iku
N1 - Funding Information:
The present study was supported by JSPS KAKENHI JP15H05747, JP15H05815, JP16H06286, JP16H04056, JP17H06140, and JP17K06456 and by Kanazawa University SAKIGAKE project. The authors would like to thank Marty Karjala of the University of Alaska Fairbanks (UAF) for his careful support with the EMCCD optical observations at Gakona. The database construction for the PWING ground-based instruments is partly supported by the IUGONET (Inter-university Upper atmosphere Global Observation NETwork) project (http://www.iugonet.org/). The authors would also like to extend sincere thanks to all members of the ERG project, the PWING project, and the ERG Science Center. This work was carried out by the joint research program of the Institute for Space–Earth Environmental Research (ISEE), Nagoya University.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Chorus waves, among the most intense electromagnetic emissions in the Earth’s magnetosphere, magnetized planets, and laboratory plasmas, play an important role in the acceleration and loss of energetic electrons in the plasma universe through resonant interactions with electrons. However, the spatial evolution of the electron resonant interactions with electromagnetic waves remains poorly understood owing to imaging difficulties. Here we provide a compelling visualization of chorus element wave–particle interactions in the Earth’s magnetosphere. Through in-situ measurements of chorus waveforms with the Arase satellite and transient auroral flashes from electron precipitation events as detected by 100-Hz video sampling from the ground, Earth’s aurora becomes a display for the resonant interactions. Our observations capture an asymmetric spatial development, correlated strongly with the amplitude variation of discrete chorus elements. This finding is not theoretically predicted but helps in understanding the rapid scattering processes of energetic electrons near the Earth and other magnetized planets.
AB - Chorus waves, among the most intense electromagnetic emissions in the Earth’s magnetosphere, magnetized planets, and laboratory plasmas, play an important role in the acceleration and loss of energetic electrons in the plasma universe through resonant interactions with electrons. However, the spatial evolution of the electron resonant interactions with electromagnetic waves remains poorly understood owing to imaging difficulties. Here we provide a compelling visualization of chorus element wave–particle interactions in the Earth’s magnetosphere. Through in-situ measurements of chorus waveforms with the Arase satellite and transient auroral flashes from electron precipitation events as detected by 100-Hz video sampling from the ground, Earth’s aurora becomes a display for the resonant interactions. Our observations capture an asymmetric spatial development, correlated strongly with the amplitude variation of discrete chorus elements. This finding is not theoretically predicted but helps in understanding the rapid scattering processes of energetic electrons near the Earth and other magnetized planets.
UR - http://www.scopus.com/inward/record.url?scp=85060151956&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-07996-z
DO - 10.1038/s41467-018-07996-z
M3 - Journal Article
C2 - 30651535
AN - SCOPUS:85060151956
VL - 10
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 257
ER -