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The Finnish Meteorological Institute is a leading expert in meteorology, air quality, climate change, earth observation, marine and arctic research areas.

FMI's researchers publish about 300 peer-reviewed articles annually.

In Science News we publish current information about FMI's studies on the weather, the sea and the climate.

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Cold electrons observed around a comet

Cold electrons observed around a comet

New study shows direct detection of strong electron cooling around a comet. Strong electron cooling on the neutral gas in cometary comae has been predicted for a long time, but now first actual measurements of low electron temperature were detected.

Comets are mainly composed of dusty ices originally from the young solar system. Most comets are located in the outer solar system far from the Sun and Earth, where no processes change their composition over long periods of time. Studying comets gives information about conditions when the planets and the solar system was forming. In this work observations of electrically charged particles from Rosetta's LAP instrument were analyzed. Finnish Meteorological Institute has participated in the LAP instrument as well as several other instruments on the Rosetta orbiter and the Philae lander.

More information::

Researcher Riku Järvinen, tel. +358 50 380 3195,

Eriksson et al. (2017), Cold and warm electrons at comet 67P/Churyumov-Gerasimenko, A&A 605, A15,

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FMI publications

FMI researchers produce some 300 publications annually, the majority of them in international scientific journals. Research results are also published in FMI´ss own publications series. FMI`s own series are:

* FMI Contributions: high-quality peer-reviewed research results, mainly doctoral dissertations

* FMI Reports: current research results mainly for customers and other stakeholders

All publications from 2016 onwards can be found on Helda.