Quasi-periodic rapid motion of pulsating auroras
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- 作者：Yoko Fukudaa ; b ; yoko.f@eps.s.u-tokyo.ac.jp" class="auth_mail" title="E-mail the corresponding author ; Ryuho Kataokab ; c ; Yoshizumi Miyoshid ; Yuto Katohe ; Takanori Nishiyamab ; Kazuo Shiokawad ; Yusuke Ebiharaf ; Donald Hamptong ; Naomoto Iwagamia
- 关键词：Pulsating aurora ; Wave-particle interactions ; High-speed imaging
- 刊名：Polar Science
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：10
- 期：3
- 页码：183-191
- 全文大小：3622 K
文摘
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Pulsating auroras rapidly change shape with the 3 Hz intensity modulation.
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The deformation speed is comparable to or less than the Alfvén speed.
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Both slow- and fast-mode Alfvén waves may contribute to the changing shape.