EGU22-6378, updated on 28 Mar 2022
https://doi.org/10.5194/egusphere-egu22-6378
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Kinetic signatures of magnetic reconnection in the global hybrid-Vlasov and local particle-in-cell simulations.  

Ivan Zaitsev1, Andrey Divin2, Urs Ganse, Yann Pfau-Kempf, Markus Battarbee, Markku Alho, Jonas Suni, Maxime Grandin, Lucile Turc, Giulia Cozzani, Maarja Bussov, Maxime Dubart, Harriet George, Konstantinos Horaites, Konstantinos Papadakis, Talgat Manglayev, Vertti Tarvus, Honyang Zhou, and Minna Palmroth
Ivan Zaitsev et al.
  • 1University of Helsinki, Department of Physics, Helsinki, Finland
  • 2Saint-Petersburg State University, Department of Physics, Saint-Petersburg, Russia

Magnetic reconnection is the energy converter in space plasma that releases magnetic energy into the kinetic energy of particles. We study the magnetotail reconnection in the first 3D global magnetospheric hybrid-Vlasov simulation performed with Vlasiator code. We also performed a simulation of symmetric magnetic reconnection in particle-in-cell technique with the iPIC3D code to compare ion kinetic signatures of reconnection for both hybrid-Vlasov and fully-kinetic approaches. Despite the relatively coarse spatial resolution in the global 3D hybrid-Vlasov model, we are able to recognize the most distinguished reconnection features: ion demagnetization, non-gyrotropic ion acceleration and energy dissipation. Using the well-known signatures of the different subregions of symmetric magnetic reconnection we are able to identify ion diffusion regions, separatrices and reconnection jet fronts in the global simulation. Guided by the measure of the ion perpendicular slippage, we identify ion diffusion regions where ion non-gyrotropic crescent-type distributions are formed. These distinguishable features are nicely visible in the PIC simulation data as well. Separatrix regions are visible as the layers containing the potential Hall electric field at the boundaries of accelerated outflow. Reconnection jet fronts in the global simulation are highlighted at the positions where the energy dissipation peaks. Three-dimensional effects affecting the extending of the reconnection characteristics in the equatorial plane are discussed.

How to cite: Zaitsev, I., Divin, A., Ganse, U., Pfau-Kempf, Y., Battarbee, M., Alho, M., Suni, J., Grandin, M., Turc, L., Cozzani, G., Bussov, M., Dubart, M., George, H., Horaites, K., Papadakis, K., Manglayev, T., Tarvus, V., Zhou, H., and Palmroth, M.: Kinetic signatures of magnetic reconnection in the global hybrid-Vlasov and local particle-in-cell simulations.  , EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-6378, https://doi.org/10.5194/egusphere-egu22-6378, 2022.

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