• Role of PPARC

    The planetary worlds of our solar system are gradually revealing their secrets thanks, in no small way, to the recent ability of man to send out planetary probes. However, to obtain a comprehensive view of the planets, it is essential that faint light and weak radio signals that reach Earth from distant planets be observed from Earth with advanced technologies. PPARC is the only research center that conducts planetary observations from Earth using optical and radio signals. Our objective is to deepen our understanding of planetary worlds and thereby expand the frontiers of the human race. Looking to the future, we can envision our research extending to planets outside our solar system.


    ◇Research and Development

    Sun, Planets Satellites, and Exoplanets

    Earth's Aurora, Upper Atmosphere, Ionosphere Magnetosphere and Radiation Belt 

    Development of Instruments for space and ground observations

    Past Studies

    ◇Our Facilities and Data

    Haleakala T60 and T40 

    --- Haleakala Monitoring Data 

    IPRT/AMATERAS 

    HF Antenna Sytem 

    Intruduction Leaflet

    ◇Major Projects

    PLANETS (UH page)  

    Space Missions 

    JSPS Sakura (Japan-France)

    JSPS AMAVERO (Japan-Belgium)

    ◇Past Projects

    JSPS Promotion of the Strategic Research Program

  • Director's Message: Prof. Takahiro Obara

    Thank you very much for your viewing this home page, which introduces activities of the planetary plasma and atmospheric research center (PPARC) of Tohoku University. We have been investigating various kinds of phenomena which are taking place in the atmospheric environments of the Earth, Mars, Venus, Mercury and Jupiter, based on the optical and radio wave measurements both from the ground and the satellites. We found very active electromagnetic phenomena in the Jovian magnetosphere, an existence of very tiny atmosphere on the surfaces of Moon and Mercury, and an escape of the atmosphere from the Mars and Venus. We also clarified basic mechanism of the solar effects on the Earth's upper atmosphere. More unknown phenomena are waiting for researches in the planetary worlds. We are now constructing a new generation telescope on the summit of Haleakala mountain in Maui island, Hawaii. We are reconstructing observatories in Japan to realize more modern measurements and we also are joining JAXA planetary exploration programs. Learning more about these planetary worlds will help us to expand frontiers of the human activities. We are performing research and education with a hope that many people will develop a keen interest in the fascinating worlds of solar-system planets.

    Brief History

    1932 Mukaiyama Geomagnetic Observatory was founded.
    1947 Onagawa Geomagnetic Observatory was founded.
    1957 Zao Airglow Observatory was founded.
    1957 Geomagnetic Observatory attached to Faculty of Science was founded.
    1961 Onagawa Geomagnetic Observatory was moved to the current place at Kirigasaki.
    1973 Upper Atmosphere and Space Research Laboratory attached to Faculty of Science was founded.
    1974 Observation of Jupiter's radio emission was started at Zao Observatory.
    1977 1-km baseline interferometer observation of Jupiter's radio emission was started at Zao Observatory.
    1980 Kawatabi Observatory was founded. Zao-Kawatabi long baseline interferometer observation of Jupiter's radio emission was started.
    1984 Yoneyama Observatory was founded. Zao-Kawatabi-Yoneyama long baseline interferometer observation of Jupiter's radio emission was started. 
    1992 Iitate Observatory was founded. Zao-Kawatabi-Iitate long baseline interferometer observation of Jupiter's radio emission was started.
    1993 Zao Observatory was moved to the current place at Shichigahara.
    1996 ELF magnetic pulsation observation was started at Onagawa Observatory.
    1996 Observation of Jupiter and Galaxy radio emission with 100-m array interferometer was started at Iitate Observatory.
    1998 A 60-cm optical-infrared telescope were founded in Iitate Observatory.
    1999 PPARC was founded by integrating Upper Atmosphere and Space Research Laboratory and Geomagnetic Observatory. Above four observatory were attached to PPARC.
    2000 IPRT started observation of Jupiter's synchrotoron radiation at Iitate Observatory.
    2000 2-m dome facility was founded at Haleakala summit, Maui, Hawaii, and started observation of Jupiter's satellite Io torus.
    2006 T40 facility with 2.6-m dome was founded at Haleakala.
    2010 IPRT started observation of solar radio emission.
    2014 60-cm telescope was relocated from Iitate to Haleakala. T60 facility was founded.