Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras

M. Fukizawa; T. Sakanoi; Y. Miyoshi; K. Hosokawa; K. Shiokawa; Y. Katoh; Y. Kazama; A. Kumamoto; F. Tsuchiya; Y. Miyashita; Y. M. Tanaka; Y. Kasahara; M. Ozaki; A. Matsuoka; S. Matsuda; M. Hikishima; S. Oyama; Y. Ogawa; S. Kurita; R. Fujii

doi:10.1029/2018GL080145

Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras

M. Fukizawa, T. Sakanoi, Y. Miyoshi, K. Hosokawa, K. Shiokawa, Y. Katoh, Y. Kazama, A. Kumamoto, F. Tsuchiya, Y. Miyashita, Y. M. Tanaka, Y. Kasahara, M. Ozaki, A. Matsuoka, S. Matsuda, M. Hikishima, S. Oyama, Y. Ogawa, S. Kurita, R. Fujii

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Pulsating auroras (PsAs) are thought to be generated by precipitating electrons scattered by lower-band chorus (LBC) waves near the magnetic equator. One-to-one correlation between the LBC intensity and the PsA intensity has been reported. Electrostatic electron cyclotron harmonic (ECH) waves can also scatter electrons. However, direct correlation between ECH and PsA has not been reported yet. In this study, using a coordinated Exploration of energization and Radiation in Geospace (Arase) satellite and ground-based imager observation, we report that not only LBC but also ECH have correlation with PsA. We estimated the precipitating electron energy by assuming that the time lag when the cross-correlation coefficient became the highest was travel time of electrons from the modulation region. We found that the estimated energies show reasonable values as the cyclotron resonance energy of each wave.

Original language	English
Pages (from-to)	12,661-12,668
Journal	Geophysical Research Letters
Volume	45
Issue number	23
DOIs	https://doi.org/10.1029/2018GL080145
Publication status	Published - 2018 Dec 16

Keywords

Arase
chorus
electrostatic electron cyclotron harmonic
inner magnetosphere
pulsating aurora
wave-particle interaction

ASJC Scopus subject areas

Geophysics
Earth and Planetary Sciences(all)

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Fukizawa, M., Sakanoi, T., Miyoshi, Y., Hosokawa, K., Shiokawa, K., Katoh, Y., Kazama, Y., Kumamoto, A., Tsuchiya, F., Miyashita, Y., Tanaka, Y. M., Kasahara, Y., Ozaki, M., Matsuoka, A., Matsuda, S., Hikishima, M., Oyama, S., Ogawa, Y., Kurita, S., & Fujii, R. (2018). Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras. Geophysical Research Letters, 45(23), 12,661-12,668. https://doi.org/10.1029/2018GL080145

Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras. / Fukizawa, M.; Sakanoi, T.; Miyoshi, Y.; Hosokawa, K.; Shiokawa, K.; Katoh, Y.; Kazama, Y.; Kumamoto, A.; Tsuchiya, F.; Miyashita, Y.; Tanaka, Y. M.; Kasahara, Y.; Ozaki, M.; Matsuoka, A.; Matsuda, S.; Hikishima, M.; Oyama, S.; Ogawa, Y.; Kurita, S.; Fujii, R.

In: Geophysical Research Letters, Vol. 45, No. 23, 16.12.2018, p. 12,661-12,668.

Research output: Contribution to journal › Article › peer-review

Fukizawa, M, Sakanoi, T, Miyoshi, Y, Hosokawa, K, Shiokawa, K, Katoh, Y, Kazama, Y, Kumamoto, A , Tsuchiya, F, Miyashita, Y, Tanaka, YM, Kasahara, Y, Ozaki, M, Matsuoka, A, Matsuda, S, Hikishima, M, Oyama, S, Ogawa, Y, Kurita, S & Fujii, R 2018, 'Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras', Geophysical Research Letters, vol. 45, no. 23, pp. 12,661-12,668. https://doi.org/10.1029/2018GL080145

Fukizawa, M. ; Sakanoi, T. ; Miyoshi, Y. ; Hosokawa, K. ; Shiokawa, K. ; Katoh, Y. ; Kazama, Y. ; Kumamoto, A. ; Tsuchiya, F. ; Miyashita, Y. ; Tanaka, Y. M. ; Kasahara, Y. ; Ozaki, M. ; Matsuoka, A. ; Matsuda, S. ; Hikishima, M. ; Oyama, S. ; Ogawa, Y. ; Kurita, S. ; Fujii, R. / Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras. In: Geophysical Research Letters. 2018 ; Vol. 45, No. 23. pp. 12,661-12,668.

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AU - Shiokawa, K.

AU - Katoh, Y.

AU - Kazama, Y.

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AU - Tanaka, Y. M.

AU - Kasahara, Y.

AU - Ozaki, M.

AU - Matsuoka, A.

AU - Matsuda, S.

AU - Hikishima, M.

AU - Oyama, S.

AU - Ogawa, Y.

AU - Kurita, S.

AU - Fujii, R.

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