LE CONTEL, O.; RETINÒ, A.; ALQEEQ, S.; CHUST, T.; KHOTYAINTSEV, Y.; NAKAMURA, R.; LINDQVIST, P.-A.; GERSHMAN, D. J.; BURCH, J. L.; TORBERT, R. B.; ERGUN, R. E.; GILES, B. L.; FUSELIER, S. A.; RUSSELL, C. T.; SAITO, Y.; GÉNOT, V.; LAVRAUD, B.; TURNER, D. L.; COHEN, I. J.

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LE CONTEL, O.
Laboratoire de Physique des Plasmas [LPP]

RETINÒ, A.
Laboratoire de Physique des Plasmas [LPP]

ALQEEQ, S.
Laboratoire de Physique des Plasmas [LPP]

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Ce document a été publié dans

49th European Conference on Plasma Physics (2023), 2023-07-03, Bordeaux.

Résumé en anglais

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.< Réduire

Mots clés en anglais

collisionless plasmas, magnetosphere, plasma jet, plasma waves, energy conversion

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Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804