University of Oulu

Kawamura, S., Hosokawa, K., Kurita, S., Oyama, S., Miyoshi, Y., Kasahara, Y., et al. (2019). Tracking the region of high correlation between pulsating aurora and chorus: Simultaneous observations with Arase satellite and ground‐based all‐sky imager in Russia. Journal of Geophysical Research: Space Physics, 124, 2769– 2778.

Tracking the region of high correlation between pulsating aurora and chorus : simultaneous observations with Arase satellite and ground‐based all‐sky imager in Russia

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Author: Kawamura, S.1; Hosokawa, K.1; Kurita, S.2;
Organizations: 1Graduate School of Communication Engineering and Informatics, University of Electro‐Communications, Chofu, Japan
2Institute for Space‐Earth Environmental Research, Nagoya University, Nagoya, Japan
3National Institute of Polar Research, Tachikawa, Japan
4Ionosphere Research Unit, University of Oulu, Oulu, Finland
5Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
6Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Chofu, Japan
7Polar Geophysical Institute, Murmansk, Russia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 6.3 MB)
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Language: English
Published: American Geophysical Union, 2019
Publish Date: 2019-09-25


The temporal modulations of magnetospheric chorus waves are one of the candidates for explaining quasiperiodic precipitation of energetic electrons causing pulsating aurora (PsA). To confirm fully the direct association between PsA and chorus, an extended interval of PsA (~1 hr) simultaneously observed by the Arase satellite and a ground‐based all‐sky imager in Apatity, Kola Peninsula, Russia was examined. In particular, a region of high correlation between PsA and chorus was continuously tracked within the field of view of the all‐sky imager. The result showed that the high‐correlation region and the modeled footprint of Arase moved in tandem. This strongly implies that the chorus and PsA electrons originated from the same local interaction region. In addition, the location of the high‐correlation region showed sudden jumps, which were probably associated with the motion of the satellite through discrete spatial structures of plasma in the region of wave‐particle interaction.

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Series: Journal of geophysical research. Space physics
ISSN: 2169-9380
ISSN-E: 2169-9402
ISSN-L: 2169-9380
Volume: 124
Issue: 4
Pages: 2769 - 2778
DOI: 10.1029/2019JA026496
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
Funding: Russian Science Foundation. Grant Number: 15‐12‐20005P; Polar Geophysical Institute; International Space Science Institutes Beijing (ISSI‐BJ) International Team program; JSPS KAKENHI. Grant Numbers: JP16H01172, JP16H04056, JP16H06286, JP15H05815, JP15H05747
Copyright information: ©2019. American Geophysical Union. All Rights Reserved.