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Object 13

Polar aurora (movie)

Royal Belgian Institute for Space Aeronomy

 

Polar aurora, studied at the Royal Belgian Institute for Space Aeronomy, are luminous phenomena resulting from the interaction between the Earth's atmosphere and the Sun. Incredible to contemplate, they are a true source of wonder.

At BIRA-IASB, we study the sources of this phenomenon, which is related to the deviation of particles from the solar wind to high latitude regions by the Earth's magnetic field. By entering the Earth's atmosphere, these particles excite oxygen and nitrogen molecules, which then emit light and create the aurora. By studying satellite observations and developing physical models, we determine the intensity of auroras and their location in latitude along the auroral oval as a function of solar and geomagnetic activity.

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