| Issue |
J. Space Weather Space Clim.
Volume 12, 2022
|
|
|---|---|---|
| Article Number | 17 | |
| Number of page(s) | 14 | |
| DOI | https://doi.org/10.1051/swsc/2022014 | |
| Published online | 20 May 2022 | |
Research Article
The polarisation of auroral emissions: A tracer of the E region ionospheric currents
1
Institut de Plantologie et d’Astrophysique de Grenoble (IPAG) CNRS – UGA, 38400 Saint-Martin-d’Hères, France
2
Tromsø Geophysical Observatory, UiT – The Arctic University of Norway, 9019 Tromsø, Norway
3
Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, UGE, ISTerre, 38000 Grenoble, France
4
National Institute of Polar Research, 190-8518 Tokyo, Japan
5
DarkSkyLab, 31000 Toulouse, France
6
Honorary Astronomer at Royal Observatory of Belgium, 1180 Brussels, Belgium
* Corresponding author: leo.bosse@univ-grenoble-alpes.fr
Received:
7
June
2021
Accepted:
25
April
2022
It is now established that auroral emissions as measured from the ground are polarised. The question of the information given by this polarisation is still to be explored. This article shows the results of a coordinated campaign between an optical polarimeter and several ground-based instruments, including magnetometers, the EISCAT VHF radar, and complementary luminance meters in the visible domain (Ninox). We show that in the E region, the polarisation is a potential indicator of the ionospheric currents, velocity, and dynamics.
Key words: Aurora / Polarisation / EISCAT
© L. Bosse et al., Published by EDP Sciences 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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