Artitst image of ETG-satellite

Esa Turunen started as visiting professor at STEL

The director of SGO Esa Turunen has today started as visiting professor at the Solar Terrestrial Environment Laboratory (STEL) of Nagoya University, in Japan. The topic of the visit is research on chemical effects in the atmosphere by pulsating aurora. His collaborator at STEL is Prof. Yoshizumi Miyoshi who is the scientific principal investigator of the Japanese ERG satellite. ERG will be launched in 2016.

The region of space near Earth is called Geospace environment today. In geospace we find the radiation belts around Earth, earlier also called van Allen radiation belts. The belts capture a huge volume of highly energetic charged particles. Their energy may exceed several megaelectronvolts.  The ERG satellite aims at elucidating how the highly energetic electrons are born and rapidly vanish repeatedly during space weather storms, which are known to be caused by the disturbances in solar wind. ERG also studies how the space weather storms appear in general in the geospace environment. One interesting research target of ERG mission is the relativistic electron precipitation into the atmosphere. This can be studied also by ground-based radio science instrumentation, such as the EISCAT incoherent scatter radars for example.

Dr. Thomas Ulich acts as the director of SGO during the visit. Turunen's visit to Japan ends in 30 June 2015.


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Last updated: 1.4.2015