Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 37, issue 5
Articles | Volume 37, issue 5
https://doi.org/10.5194/angeo-37-791-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-37-791-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 5
Regular paper
 | Highlight paper
 | 
10 Sep 2019
Regular paper | Highlight paper |  | 10 Sep 2019

Hybrid-Vlasov modelling of nightside auroral proton precipitation during southward interplanetary magnetic field conditions

Maxime Grandin, Markus Battarbee, Adnane Osmane, Urs Ganse, Yann Pfau-Kempf, Lucile Turc, Thiago Brito, Tuomas Koskela, Maxime Dubart, and Minna Palmroth

Supplement

https://doi.org/10.5194/angeo-37-791-2019-supplement

Model code and software

Analysator: python analysis toolkit O. Hannuksela and the Vlasiator team https://github.com/fmihpc/analysator/

Vlasiator M. Palmroth http://www.physics.helsinki.fi/vlasiator/

Vlasiator: hybrid-Vlasov simulation code M. Palmroth and the Vlasiator team https://github.com/fmihpc/vlasiator/

VLSV: file format and tools A. Sandroos https://github.com/fmihpc/vlsv/

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Short summary
When the terrestrial magnetic field is disturbed, particles from the near-Earth space can precipitate into the upper atmosphere. This work presents, for the first time, numerical simulations of proton precipitation in the energy range associated with the production of aurora (∼1–30 keV) using a global kinetic model of the near-Earth space: Vlasiator. We find that nightside proton precipitation can be regulated by the transition region between stretched and dipolar geomagnetic field lines.
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