2021

12 papers were published in 2021.

Refereed Journal Articles

Nishiyama, T., M. Taguchi, H. Suzuki, P. Dalin, Y. Ogawa, U. Brandstrom, T. Sakanoi,
Temporal evolutions of N2+ Meinel (1,2) band near 1.5 μm associated with aurora breakup and their effects on mesopause temperature estimations from OH Meinel (3,1) band,
Earth, Planets and Space, EPSP-D-20-00293, 2021.

Hosokawa, K., Y. Miyoshi, S.-I. Oyama, Y. Ogawa, S. Kurita, Y. Kasahara, Y. Kasaba, S. Yagitani, S. Matsuda, M. Ozaki, F. Tsuchiya, A. Kumamoto, T. Takashima, I. Shinohara, and R. Fujii,
Over-darkening of pulsating aurora,
Journal of Geophysical Research: Space Physics, doi:10.1029/2020JA028838, 2021.

Sugo, S., O. Kawashima, S. Kasahara, K. Asamura, R. Nomura, Y. Miyoshi, Y. Ogawa, K. Hosokawa, T. Mitani, T. Namekawa, T. Sakanoi, M. Fukizawa, N. Yagi, Y. Fedorenko, A. Nikitenko, S.Yokota, K. Keika, T. Hori, C. Koehler,
Energy-resolved detection of precipitating electrons of 30-100 keV by a sounding rocket associated with dayside chorus waves,
Journal of Geophysical Research: Space Physics, doi:10.1029/2020JA028477, 2021.

Takada, M., K. Seki, Y. Ogawa, , K. Keika, S. Kasahara, S. Yokota, T. Hori, K. Asamura, Y. Miyoshi, and I. Shinohara,
Low-altitude ion upflow observed by EISCAT and its effects on supply of molecular ions in the ring current detected by Arase (ERG),
Journal of Geophysical Research: Space Physics, doi:10.1029/2020JA028951, 2021.

Fukizawa, M., Sakanoi, T., Ogawa, Y., Tsuda, T. T., & Hosokawa, K.
Statistical study of electron density enhancements in the ionospheric F region associated with pulsating auroras.
Journal of Geophysical Research: Space Physics, 126, e2021JA029601. doi:10.1029/2021JA029601, 2021.

Kawamura, M., Sakanoi, T., Fukizawa, M., Miyoshi, Y., Hosokawa, K., Tsuchiya, F., et al.
Simultaneous pulsating aurora and microburst observations with ground-based fast auroral imagers and CubeSat FIREBIRD-II.
Geophysical Research Letters, 48, e2021GL094494. doi:10.1029/2021GL094494, 2021.

Miyamoto, T., Oyama, S.-i., Raita, T., Hosokawa, K., Miyoshi, Y., Ogawa, Y., & Kurita, S.
Variations in cosmic noise absorption in association with equatorward development of the pulsating auroral patch: A case study to estimate the energy spectra of auroral precipitating electrons.
Journal of Geophysical Research: Space Physics, 126, e2021JA029309. doi:10.1029/2021JA029309, 2021.

Miyoshi, Y., Hosokawa, K., Kurita, S. et al.
Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae.
Sci Rep 11, 13724. doi:10.1038/s41598-021-92611-3, 2021.

Stepanov, N. A., Sergeev, V. A., Shukhtina, M. A., Ogawa, Y., Chu, X., & Rogov, D. D.
Ionospheric electron density and conductance changes in the auroral zone during substorms.
Journal of Geophysical Research: Space Physics, 126, e2021JA029572. doi:10.1029/2021JA029572, 2021.

Namekawa, T., Mitani, T., Asamura, K., Miyoshi, Y., Hosokawa, K., Ogawa, Y., et al.
Rocket observation of sub-relativistic electrons in the quiet dayside auroral ionosphere.
Journal of Geophysical Research: Space Physics, 126, e2020JA028633. doi:10.1029/2020JA028633, 2021.

Kagawa, A., Hosokawa, K., Ogawa, Y., Ebihara, Y., & Kadokura, A.
Occurrence distribution of polar cap patches: dependences on UT, season and hemisphere.
Journal of Geophysical Research: Space Physics, 126, e2020JA028538. doi:10.1029/2020JA028538, 2021.

Bjoland, L. M., Ogawa, Y., Løvhaug, U. P., Lorentzen, D. A., Hatch, S. M., & Oksavik, K.
Electron density depletion region observed in the polar cap ionosphere.
Journal of Geophysical Research: Space Physics, 126, e2020JA028432. doi:10.1029/2020JA028432, 2021.

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