Simultaneous Pulsating Aurora and Microburst Observations With Ground-Based Fast Auroral Imagers and CubeSat FIREBIRD-II

被引：15

作者：

Kawamura, Miki ^{[1
]}

Sakanoi, Takeshi ^{[1
]}

Fukizawa, Mizuki ^{[1
]}

Miyoshi, Yoshizumi ^{[2
]}

Hosokawa, Keisuke ^{[3
]}

Tsuchiya, Fuminori ^{[1
]}

Katoh, Yuto ^{[1
]}

Ogawa, Yasunobu ^{[4
,5
,6
]}

Asamura, Kazushi ^{[7
]}

Saito, Shinji ^{[8
]}

Spence, Harlan ^{[9
]}

Johnson, Arlo ^{[10
]}

Oyama, Shin'ichiro ^{[2
,4
,11
]}

Brandstrom, Urban ^{[12
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, Sendai, Miyagi, Japan

[2] Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan

[3] Univ Electrocommun, Chofu, Tokyo, Japan

[4] Natl Inst Polar Res, Tachikawa, Tokyo, Japan

[5] Grad Univ Adv Studies SOKENDAI, Tachikawa, Tokyo, Japan

[6] Res Org Informat & Syst, Joint Support Ctr Data Sci Res, Tachikawa, Tokyo, Japan

[7] Japan Aerosp Explorat Agcy, Inst Space Astronaut Sci, Sagamihara, Kanagawa, Japan

[8] NICT, Koganei, Tokyo, Japan

[9] Univ New Hampshire, Phys Dept, Durham, NH 03824 USA

[10] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[11] Univ Oulu, Oulu, Finland

[12] Swedish Inst Space Phys, Kiruna, Sweden

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 18期

基金：

美国国家科学基金会;

关键词：

pulsating aurora; microbursts; chorus waves; PRECIPITATION; ELECTRONS; SPECTRA; WAVES;

D O I：

10.1029/2021GL094494

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report on the relationship between a pulsating aurora and a relativistic electron microburst using simultaneous observations of ground-based fast auroral imagers with the FIREBIRD-II CubeSat for the first time. We conducted a detailed analysis of an event on October 8, 2018 and found that the occurrence of the pulsating aurora with internal modulations corresponds to the flux enhancement of electrons with energy ranging from similar to 220 keV to >1 MeV detected with Flight Unit 4, one of FIREBIRD's CubeSat, with a time delay of similar to 585 ms. Combining of this time delay result and time of flight model, we suggest that the pulsating aurora and the microburst occur simultaneously due to the chorus waves at different latitudes along the same field-line as predicted by Miyoshi et al. (2020, ).

引用

页数：9

共 41 条

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