Research and Development

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Sun and Planets




Venus and Mars

  • Venus’ middle and upper atmosphere by models
  • Venus’ mesospheric wind and temperature field based on MILAHI data
  • Minor tracer gases on Mars revealed by MEX/PFS, and Exomars/TGO and ground-based telescopes(Subaru, SOFIA, ALMA etc)
  • Martian atmospheric gravity waves observed by MEVEN and models
  • Periodic variations of Venus upper atmosphere by Hisaki
  • Full-particle and GCM models of the Martian upper atmosphere


Auroral Ionosphere, and Magnetosphere

  • Pulsating aurora and related high-energy precipitating electrons obtained by sounding rockets and models
  • Small-scale discrete aurora and pulsating aurora obtained with Reimei, ground-based imagers (Poker Flat/MIRACLE/ALIS) and EISCAT/ESR radars
  • Auroral radio emissions measured with ground, rocket and space experiments
  • High-latitude ionospheric outflow and upflow obtained with Akebono and ground-based spectrometer at Svalvard
  • Radiation belt high-energy particle revealed with Arase(ERG) and ground-based LF radar
  • Polar cap auroral dynamics and high-energy precipitation (SEP, SPA) events

Upper and middle atmosphere

  • Concentric atomospheric gravity waves at mid- and low-latitudes thermosphere observed by ISS/IMAP-VISI
  • Tenuous gas analysis related to ion upflow in the upper atmosphere


  • Moon’s surface structure and plasma environment observed with Kaguya


Developments and Observatories

Space Missions and Instruments

  • Reimei/MAC (Multi-spectral auroral camera)
  • ISS/IMAP-VISI (Visible and near-Infrared Spectrograph Instrument)
  • Arase(ERG)/PWI (Plasma wave)
  • BepiColombo/MMO(Mercury Magnetospheric Orbiter)/PWI(Plasma Wave Investigation)
  • JUICE/RPWI(Plasma wave) and SWI(Submillimeter Wave Instrument)
  • Mars Moon eXploration(MMX)/Near-infrared hyper-spectral imager

Observatories and ground-based instruments

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