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Radio Science Simulation Lab
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Reproducing and predicting auroras and magnetic storms by computer.
AboutAbout the lab
Predicting space weather by computation.
The Radio Science Simulation Lab (Ebihara Lab, Research Institute for Sustainable Humanosphere) studies disturbances that occur in the space around Earth, such as auroras, magnetic storms, and variations in the radiation belts.
Using computer simulations, the lab investigates the flow of energy and matter from the Sun to Earth and the interactions between particles and electromagnetic waves.
The lab aims to predict the effects on social infrastructure such as power grids and satellites, and thereby contribute to a safe and secure society and to the use of space.
Key terms
- Magnetic storm
- A phenomenon in which Earth's magnetic field is greatly disturbed by plasma and other material coming from the Sun
- Radiation belt
- A collection of high-energy particles trapped by Earth's magnetic field and moving at close to the speed of light
- Space weather
- The state of the space around Earth, which changes with solar activity
ResearchResearch themes
The lab uses computer simulations to theoretically clarify the fundamental physical processes of space, and develops diagnostic techniques for the space environment and numerical models for predictable space weather.
*Illustrative imageHow auroral breakup works
In auroral breakup, when a bright aurora suddenly expands, a current of nearly 1 million amperes flows between space and Earth. The lab uses simulations that take collisions with the neutral atmosphere into account to clarify the region that serves as the power source and the mechanism behind it.
*Illustrative imageMagnetic storms and their effects on power grids
When a magnetic storm generates an electric field on the ground, current can flow through power grids and cause blackouts. The lab reconstructs past giant magnetic storms by simulation and quantifies how they developed and how they affected power grids.
*Illustrative imageTaking on the mystery of the radiation belts
The radiation belts, which expose satellites and astronauts to radiation, can increase greatly after a magnetic storm, and this remains a major mystery. The lab tackles this difficult problem with large-scale simulations that cover everything from the solar wind to electron acceleration.
*Illustrative imageForecasting space weather
To know the state of space in real time, the lab develops simulation-based diagnostic techniques for the space environment and numerical models for predictable space weather. It also develops visualization techniques that make the results easier to see.
MembersFaculty
The lab's faculty members are Professor Yusuke Ebihara and Lecturer Yikai Hsieh.
- ProfessorYusuke Ebihara
- LecturerYikai Hsieh
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Lofoten, Norway (Unsplash)” Johannes Groll followhansi / CC0 (cropped)
- How auroral breakup works: “Alaskan Aurora Time Lapse (SVS15077)” NASA's Scientific Visualization Studio - Amentum Services, Inc./Mike Toillion / Public domain (cropped)
- Magnetic storms and their effects on power grids: “High-voltage transformer 750 kV Трансформатор 750 кВ” Novoklimov / CC0 (cropped)
- Taking on the mystery of the radiation belts: “NASA's Van Allen Probes Spot an Impenetrable Barrier in Space ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
- Forecasting space weather: “Coronal Mass Ejection Headed for Earth? ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
- Related lab (Space Radio Engineering Lab / (Research Institute for Sustainable Humanosphere) Space Electromagnetic Environment Exploration Lab): “Arase ISAS” 宇宙科学研究所(ISAS) / CC BY 4.0 (cropped)
- Related lab (Electrical Information Systems Lab): “Chubu Electric Power Grid Chushin Substation” photo: Qurren (talk) Taken with Canon PowerShot G9 X / CC BY-SA 4.0 (cropped)
- Related lab (Earth Atmosphere Measurement / Atmospheric Precision Measurement and Diagnosis Lab): “MU Radar, Research Institute for Sustainable Humanosphere, Kyoto University - Oct 15, 2011” eiko / CC BY-SA 2.0 (cropped)
- Related lab (Remote Sensing Engineering / Radar Atmospheric Science Lab): “Atmospheric Radar Array - geograph.org.uk - 3106005” Chris Andrews / CC BY-SA 2.0 (cropped)
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