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Communication Dans Un Congrès Année : 2023

Kinetic processes in fast collisionless plasma flows

O. Le Contel
A. Retinò

Résumé

The collisionless plasma of the Earth’s magnetotail hosts non stationary plasma transport caused by fast and transient flows moving towards the Earth with speeds larger than hundreds of km/s. These flows generate sharp increases of the northward component of the magnetic field called dipolarisation fronts. These kinetic scale structures of a few ion inertial lengths along the direction of propagation are associated with an intense wave activity such as lower-hybrid waves, whistler mode waves and electromagnetic phase-space holes. Furthermore, these dipolarisation fronts move with their own dynamic current circuit and drive important energy conversion processes contributing to the energy global cycle of the magnetospheric system. I propose to discuss recent results obtained by analysing data from the Multiscale Magnetospheric mission consisting of four satellites evolving in a tetrahedral configurationand separated at the electron scale. Finally, I will stress the need to go further by implementing new space missions capable of measuring the kinetic and fluid scales simultaneously.
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Dates et versions

hal-04458404 , version 1 (14-02-2024)

Identifiants

  • HAL Id : hal-04458404 , version 1

Citer

O. Le Contel, A. Retinò, S. Alqeeq, T. Chust, Y. Khotyaintsev, et al.. Kinetic processes in fast collisionless plasma flows. 49th European Conference on Plasma Physics (2023), CEA CESTA(l), UMR CELIA (Centre Lasers Intenses et Applications), and GPR Light UB (Bordeaux University ), Jul 2023, Bordeaux, France. ⟨hal-04458404⟩
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