Research Field
Space Physics, Solar Physics, Magnetospheric Physics
Current Research
Solar atmosphere, Earth’s magnetosphere, or interplanetary space is filled with ionized gas, which is called plasma. I am trying to understand why plasma can be rapidly accelerated or heated in space. Especially, I am interested in magnetic reconnection which is one the fastest energy conversion mechanism from magnetic field energy to plasma energy.
I am also conducting research on the prediction of the solar cycle. The activity of the sun has a cycle of 11 years, and each cycle itself has its own individuality. Predict the next solar cycle by making full use of image analysis of solar satellite observation and numerical simulation.
Main research subjects: Solar corona, photosphere, Earth's magnetotail
Specific research contents include the following.
・Thermal non-equilibrium plasma in solar atmosphere
・Flare study observed by Hinode/EIS
・Partcle acceleration and heating during magnetic reconnection
・Solar-terrestrial enviroment 3.5 billions years ago
・Solar satellite data analysis using machine learning and image analysis technique
・Next solar cycle prediction
・Proposal and development of next generation solar observation satellite
Representative Publications
1. Imada S., Aoki K., Hara H., Watanabe T., Harra L. K., and Shimizu T.,
“Evidence for Hot Fast Flow above a Solar Flare”,
The Astrophysical Journal Letters, 776, L11, 2013.
2. Imada, S. , Murakami, I., Watanabe, T., Hara, H., and Shimizu, T., “Magnetic Reconnection in Non-Equilibrium Ionization Plasma”, The Astrophysical Journal, Volume 742, Issue 1, pp 70, 2011.
3. Imada, S., Nakamura, R., Daly, P. W., Hoshino, M., Baumjohann, W., Mühlbachler, S., Balogh, A., and Rème, H., “Energetic electron acceleration in the downstream reconnection outflow region”, Journal of Geophysical Research, Vol. 112, Issue A3, pp A03202, 2007.
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