Published in Earth Planets Space, 2026
TPI
Recommended citation: Kataoka, R., Sato, Y., Hampton, D. et al. (2026). "Compact all-sky auroral imager using multi band-pass filter and full-color sensor" Earth Planets Space, 78(70). https://doi.org/10.1186/s40623-026-02433-8
Published in Proceedings of the Japan Academy, Ser. B, 2026
Miyahara paper Japan Academy
Recommended citation: Miyahara, H., et al. (2026). "Extremely Active Sun from 1190 to 1220 in the Medieval Period: Intercomparison of Historical Records and Tree-ring Carbon-14" Proceedings of the Japan Academy, Ser. B, 102, 4, 156-166. https://doi.org/10.2183/pjab.102.011
Published in Space Weather, 2026
Sato paper
Recommended citation: Sato, T., Shiota, D., Kubo, Y., Kataoka, R., Yasuda, H., Miyake, S., et al. (2026). "Estimation of Global increase of radiation dose rates during the ground level enhancement on 11–12 November 2025 using WASAVIES" Space Weather, 24, e2026SW004949. https://doi.org/10.1029/2026SW004949
Published in JGR, 2026
LLBL
Recommended citation: Tanaka et al. (2026). "LLBL " GRL, submitted. https://doi.org/*
Published in GRL, 2026
CALET microburst
Recommended citation: Kurihara et al. (2026). "microburst " GRL, submitted. https://doi.org/*
Published in J. Space Weather and Space Climate, 2026
SMRAI substorm
Recommended citation: Nilam, B. et al. (2026). "SMRAI substorm" JSWSC. submitted https://doi.org/*
Published in Earth, Planets and Space, 2026
Hayashi paper
Recommended citation: Hayashi, Y., et al. (2026). "Real time monitoring of the rigidity spectrum of large Forbush decreases in May and October 2024 with the paired neutron monitor and muon detector at the Antarctic Syowa Station" Earth, Planets and Space, 78(75). https://doi.org/10.1186/s40623-026-02386-y
Published in submitted to GRL, 2026
Arai paper
Recommended citation: Arai, et al. (2026). "chorus-driven REP" GRL, submitted. https://doi.org/*
Published in Progress of Theoretical and Experimental Physics, 2026
GCR hysteresis by CALET
Recommended citation: Adriani, O., et al., CALET collaboration (2026). "Charge-sign dependent drift effects in the time-lag of cosmic-ray variation relative to solar activity observed with CALET" Progress of Theoretical and Experimental Physics, ptag025. https://academic.oup.com/ptep/advance-article/doi/10.1093/ptep/ptag025/8488771
Published in JSWSC, 2026
Multi-event study of Hokkaido aurora events
Recommended citation: Nakayama, T., and R. Kataoka (2026). "Faint aurora as seen from Japan associated with intense magnetospheric compression " JSWSC, accepted. https://doi.org/*
Published in Philosophical Transactions of the Royal Society A, 2026
Miyahara SEP review
Recommended citation: Miyahara, H., et al. (2026). "Ultra-high-precision measurements of carbon-14 and its application for space weather and space climate research" Philosophical Transactions of the Royal Society A, accepted. https://doi.org/*
Published in Geophysical Review Letters, 2026
CALET 2025 May storm slot filling paper
Recommended citation: Ficklin, A. et al. (2026). "Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station" Geophysical Review Letters. 53, e2025GL120032 https://doi.org/10.1029/2025GL120032
Published in submitted to EPS, 2026
Kyutaro paper
Recommended citation: Yanagisawa, K., et al. (2026). "Chorus ISS" EPS, submitted. https://doi.org/*
Published in submitted to PEPS, 2026
Extreme storm review paper
Recommended citation: Kataoka, R. et al. (2026). "Storm review" PEPS, submitted. https://doi.org/*
Published in Journal of Geophysical Research: Space Physics, 2025
substorm onset climatology
Recommended citation: Nakano, S., Kataoka, R., and Nose (2025). "Climatology of Pi2 pulsations deduced from the Wp index" Journal of Geophysical Research: Space Physics, 130, e2025JA034345. https://doi.org/10.1029/2025JA034345
Published in Space Weather, 2025
SuperDARN data assimilation with SMRAI model
Recommended citation: Nakano, S., Reddy, S. A., Kataoka, R., Nakamizo, A., Fujita, S., and Yukimatu, A. S. (2025). "Data assimilation into a machine learning-based emulator of a global MHD simulation for analyzing the polar ionosphere" Space Weather,23, e2025SW004488 https://doi.org/10.1029/2025SW004488
Published in Proceedings of Science, 2025
Kozai-san presentation at ICRC2025
Recommended citation: Kozai, M., Y. Hayashi, C. Kato, K. Munakata, N. Miyashita, R. Kataoka, S. Miyake, and A. Kadokura (2025). "Data publication activities for the Global Muon Detector Network (GMDN)" Proceedings of Science. 501, ICRC2025 https://doi.org/10.22323/1.501.1314
Published in JGR Space Physics, 2025
REPPU substorm
Recommended citation: Tanaka et al. (2025). "Roles of plasma sheet flow, plasma sheet dissipation and the M-I coupling in reproducing the substorm with the global simulation" JGR Space Physics. 130, e2024JA033606. http://dx.doi.org/10.1029/2024JA033606
Published in Physical Review Letters, 2025
sub-Fe paper
Recommended citation: Adriani, O. et al. (CALET Collaboration) (2025). "Precision Spectral Measurements of Chronium and Titanium from 10 to 250 GeV/n and Sub-Iron to Iron Ratio with the Calorimetric Electron Telescope on the International Space Station" Physical Review Letters. 135, 021002. https://doi.org/10.1103/py17-74rk
Published in Geophysical Research Letters, 2025
Elfin-ISS conjunction REP events
Recommended citation: Zhang, X.-J., Artemyev, A., Katoh, Y., Hsieh, Y., Angelopoulos, V., Torii, S., et al. (2025). "Exploring outer radiation belt losses from the International Space Station" Geophysical Research Letters. 52, e2025GL116966. https://doi.org/10.1029/2025GL116966
Published in ApJ Letter, 2025
Spectral change of ground-based neutrons during Forbush events
Recommended citation: Mitthumsiri, W. et al. (2025). "Ground-based Observations of Temporal Variation of Cosmic Ray Spectrum during Forbush Decreases" ApJL, 986, L7. https://doi.org/10.3847/2041-8213/add7d1
Published in Geophysical Research Letters, 2025
EMIC related deep ionization
Recommended citation: Murase, K., Kataoka, R., Tanaka, Y., Nishiyama, T., Hashimoto, T., & Sato, K. (2025). "Atmospheric ionization caused by EMIC-wave driven energetic electron precipitation at auroral latitude" Geophysical Research Letters. 52, e2024GL114248. https://doi.org/10.1029/2024GL114248
Published in Earth, Planets and Space, 2025
Oct storm citizen science
Recommended citation: Kataoka, R. et al. (2025). "Extended red aurora associated with super substorm igniting the October 10, 2024 magnetic storm as revealed by citizen science" Earth, Planets and Space. 77, 64 https://doi.org/10.1186/s40623-025-02178-w
Published in JGR Space Physics, 2025
ICME analysis (accepted)
Recommended citation: Bamba et al. (2025). "Multipoint spacecraft measurements of an ICME structure in October 2021: From the solar surface to the inner heliosphere" JGR Space Physics. accepted, * http://***
Published in GRL, 2025
RB dropout paper by CALET
Recommended citation: Freund, D., Blum, L., Huang, J., Vidal-Luengo, S., Bruno, A., & Kataoka, R. (2025). "Radiation-Belt Dropouts: Relationship with Geomagnetic Storms and MeV Precipitation" GRL, 52, e2024GL113660. https://doi.org/10.1029/2024GL113660
Published in ApJ, 2024
GCR north-south anisotropy paper
Recommended citation: Kozai, M., Y. Hayashi, K. Fujii, K. Munakata, C. Kato, N. Miyashita, A. Kadokura, R. Kataoka, S. Miyake, M. L. Duldig, J. E. Humble, and K. Iwai (2024). "Rigidity spectrum and its solar cycle variation of the north-south anisotropy in galactic cosmic-rays observed by ground-based muon detectors" ApJ. 977, 160. https://doi.org/10.3847/1538-4357/ad8577
Published in Scientific Report, 2024
Citizen science of magenta aurora during super magnetic storm
Recommended citation: Kataoka R., S. A. Reddy, S. Nakano, J. Pettit, and Y. Nakamura (2024). "Extended magenta aurora as revealed by citizen science" Scientific Report. 15, 25849. https://www.nature.com/articles/s41598-024-75184-9
Published in ApJ, 2024
phantom Forbush?
Recommended citation: Munakata et al. (2024). "Global analysis of the extended cosmic-ray decreases observed with world-wide networks of neutron monitors and muon detectors; temporal variation of the rigidity spectrum and its implication" ApJ. 974, 283. https://doi.org/10.3847/1538-4357/ad7466
Published in Journal of Geophysical Research: Space Physics, 2024
CALET collaboration paper
Recommended citation: Freund, D., Blum, L., Vidal-Luengo, S., Bruno, A., & Kataoka, R. (2024). "MeV Electron Precipitation during Radiation Belt Dropouts" Journal of Geophysical Research: Space Physics. 129, e2024JA032759. https://doi.org/10.1029/2024JA032759
Published in Journal of Geophysical Research: Space Physics, 2024
Jupiter paper
Recommended citation: Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2024). "Formation mechanism of fingers that protrude eastward from the Io plasma disk during the interchange instability" Journal of Geophysical Research: Space Physics. 129, e2024JA032559 https://doi.org/10.1029/2024JA032559
Published in Science Advances, 2024
Polar rain aurora during the day solar wind disappeared.
Recommended citation: Hosokawa, K., R. Kataoka, T. T. Tsuda, Y. Ogawa, Y. Zhang, and L. J. Paxton (2024). "Exceptionally gigantic aurora in the polar cap on a day when the solar wind almost disappeared" Science Advances. 10, 25. https://doi.org/10.1126/sciadv.adn5276
Published in Geophysical Research Letters, 2024
This paper is our first citizen science.
Recommended citation: Kataoka, R., Miyoshi, Y., Shiokawa, K., Nishitani, N., Keika, K., Amano, T., & Seki, K. (2024). "Magnetic storm-time red aurora as seen from Hokkaido, Japan on 1 December 2023 associated with high-density solar wind" Geophysical Research Letters. 51, e2024GL108778. https://doi.org/10.1029/2024GL108778
Published in Geophysical Research Letters, 2024
This paper shows the semiannual variation of REP events.
Recommended citation: Vidal-Luengo, S. E., Blum, L. W., Bruno, A., Guzik, T. G., de Nolfo, G., Ficklin, A. W., et al. (2024). "Comparative observations of the outer belt electron fluxes and precipitated relativistic electrons" Geophysical Research Letters. 51, e2024GL109673. https://doi.org/10.1029/2024GL109673
Published in Frontiers in Astronomy and Space Sciences, 2024
This paper discussed the cooling of the thermosphere during magnetic storms.
Recommended citation: Bag T, Kataoka R, Ogawa Y, Fujiwara H, Li Z, Singh V, Sivakumar V, Sridharan S, Pirnaris P and Tourgaidis T (2024). "Thermospheric nitric oxide energy budget during extreme geomagnetic storms: a comparative study " Front. Astron. Space Sci.. 11:1273079. https://doi.org/10.3389/fspas.2024.1273079
Published in Journal of Geophysical Research: Space Physics, 2024
This paper discussed the origin of NBZ convection.
Recommended citation: Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2024). "Multiple convection cells induced by in‐front and off‐front interactions between the obliquely northward IMF and the geomagnetic field " Journal of Geophysical Research: Space Physics. 129, e2023JA031994. https://doi.org/10.1029/2023JA031994
Published in J. Plasma Fusion Res., 2024
This paper reviewed some works of extreme magnetic storms. (in Japanese)
Recommended citation: 片岡龍峰 (2024). "宇宙天気に関する研究の様々な広がり～磁気嵐の成因に関する研究紹介～" プラズマ・核融合学会誌. 100(4), 187-192 https://www.jspf.or.jp/Journal/PDF_JSPF/jspf2024_04/jspf2024_04-187.pdf
Published in Journal of Geophysical Research: Space Physics, 2024
This paper shows the AI analysis of REP events.
Recommended citation: Vidal-Luengo, S. E., Blum, L. W., Bruno, A., Ficklin, A. W., de Nolfo, G., Guzik, T. G., et al. (2024). "Characterization of Relativistic Electron Precipitation Events Observed by the CALET Experiment Using Self-Organizing-Maps" Journal of Geophysical Research: Space Physics. 129, e2024JA032481 http://dx.doi.org/10.1029/2024JA032481
Published in 国文学研究資料館紀要, 2024
This paper shows the analysis of a red sign event in 1370 AD (written in Japanese)
Recommended citation: 片岡龍峰 (2024). "縁起と赤気 付・関連史料翻刻" 国文学研究資料館紀要 文学研究篇. 50, 79-102. https://kokubunken.repo.nii.ac.jp/records/2000095
Published in Advances in Space Research, 2024
This paper shows the energy spectra of iron and nickel measured by ISS CALET project
Recommended citation: Adriani, O. et al. (2024). "Direct measurements of cosmic - ray iron and nickel with CALET on the International Space Station" Advances in Space Research. in press. https://doi.org/10.1016/j.asr.2024.03.052
Published in Geophysical Research Letters, 2024
This paper discusses the REP events at ISS associated with EMIC waves.
Recommended citation: Blum, L. W., Bruno, A., Capannolo, L., Ma, Q., Kataoka, R., Torii, S., & Baishev, D. (2024). "On the Spatial and Temporal Evolution of EMIC Wave-Driven Relativistic Electron Precipitation: Magnetically Conjugate Observations From the Van Allen Probes and CALET" Studies in Japanese Literature and Culture. 51, e2023GL107087 https://doi.org/10.1029/2023GL107087
Published in Space Weather, 2024
This paper shows the details of the surrogate model for REPPU auroral Ionosphere version 2 (SMRAI2)
Recommended citation: Kataoka, R., A. Nakamizo, S. Nakano, and S. Fujita (2024). "Machine learning-based emulator for physics-based simulation of auroral current system" Space Weather. 21, e2023SW003720 https://doi.org/10.1029/2023SW003720
Published in Studies in Japanese Literature and Culture, 2023
This paper used PHITS simulation to evaluate the atmospheric impacts of Sep 2017 space weather event.
Recommended citation: Murase, K., Kataoka, R., Nishiyama, T., Sato, K., Tsutsumi, M., Tanaka, Y., et al. (2023). "Atmospheric Ionizations by Solar X-Rays, Solar Protons, and Radiation Belt Electrons in September 2017 Space Weather Event" Space Weather. 21, e2023SW003651 https://doi.org/10.1029/2023SW003651
Published in Journal of Geophysical Research: Space Physics, 2023
This paper discusses the potential atmosphercic impact on Mars due to large solar energetic particle events, using PTRIP simulation.
Recommended citation: Nakamura, Y., Leblanc, F., Terada, N., Hiruba, S., Murata, I., Nakagawa, H., et al. (2023). "Numerical Prediction of Changes in Atmospheric Chemical Compositions During a Solar Energetic Particle Event on Mars" Journal of Geophysical Research: Space Physics. 128, e2022JA031250 https://doi.org/10.1029/2022JA031250
Published in Annales Geophysicae, 2023
This paper demostrates the probabilistic prediction of AE index using ESN.
Recommended citation: Nakano, S., Kataoka, R., Nosé, M., and Gjerloev, J. W. (2023). "Probabilistic modelling of substorm occurrences with an echo state network" Annales Geophysicae. 41, 529–539 https://doi.org/10.5194/angeo-41-529-2023
Published in Physical Review Letters, 2023
This paper shows the ISS-CALET measurement of TeV electrons and positrons.
Recommended citation: Adriani, O. et al. (CALET Collaboration) (2023). "Direct Measurement of the Spectral Structure of Cosmic-Ray Electrons+Positrons in the TeV Region with CALET on the International Space Station" Physical Review Letters. 131, 191001 https://doi.org/10.1103/PhysRevLett.131.191001
Published in サステナビリティ教育研究, 2023
This paper discussed the ESD aspect of Japanese literature based on the studies of historical auroras.
Recommended citation: 片岡龍峰 (2023). "日本の古典籍を用いたオーロラ研究から考える古文・漢文の学習" サステナビリティ教育研究. 第5号, 42-48 http://hdl.handle.net/10928/1646
Published in Earth, Planets and Space, 2023
This paper shows the details of the surrogate model for REPPU auroral Ionosphere version 1 (SMRAI1)
Recommended citation: Kataoka, R., S. Nakano, and S. Fujita (2023). "Machine learning emulator for physics-based prediction of ionospheric potential response to solar wind variations" Earth, Planets and Space. 75, 139 https://doi.org/10.1186/s40623-023-01896-3
Published in Frontiers in Earth Science, 2023
This paper discusses the possible link between GCR and climate.
Recommended citation: Miyahara H, Kusano K, Kataoka R, Shima S-i and Touber E (2023). "Response of high-altitude clouds to the galactic cosmic ray cycles in tropical regions" Frontiers in Earth Science. 11:1157753 https://doi.org/10.3389/feart.2023.1157753
Published in Journal of Geophysical Research: Space Physics, 2023
This paper explain the 100-fps all-sky camera observation.
Recommended citation: Hosokawa, K., Oyama, S.-I., Ogawa, Y., Miyoshi, Y., Kurita, S., Teramoto, M., et al. (2023). "A Ground-Based Instrument Suite for Integrated High-Time Resolution Measurements of Pulsating Aurora With Arase" Journal of Geophysical Research: Space Physics. 128, e2023JA031527 https://doi.org/10.1029/2023JA031527
Published in Physical Review Letters, 2023
This paper shows the CAELT GeV e+p measurement (GCR solar modulation) compared with a modeling work.
Recommended citation: Adriani, O. et al. (CALET Collaboration) (2023). "Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station" Physical Review Letters. 130, 211001 https://doi.org/10.1103/PhysRevLett.130.211001
Published in Journal of Geophysical Research: Space Physics, 2023
This paper discusses the Jovian magnetospheric dynamics using REPPU simulation.
Recommended citation: Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2023). "Radial Transport of Io Plasma From the Inner Magnetosphere to the Tail" Journal of Geophysical Research: Space Physics. 128, e2022JA030891 https://doi.org/10.1029/2022JA030891
Published in Studies in Japanese Literature and Culture, 2023
This paper lists the red auroral events in Japanese history.
Recommended citation: Kataoka, R. (2023). "The Clustering Occurrence of Red Sign Auroral Events in Japanese History" Studies in Japanese Literature and Culture. 6, 119-143 http://id.nii.ac.jp/1283/00004724/