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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2023 Volume 117, Issue 3, Pages 220–227 (Mi jetpl6862)

PLASMA, HYDRO- AND GAS DYNAMICS

Multicomponent current sheet of the magnetopause with an arbitrary energy distribution of particles

A. A. Nechaeva, Vl. V. Kocharovskya, V. V. Kocharovskyb, M. A. Garaseva

a Federal Research Center Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia
b Department of Physics and Astronomy, Texas A&M University, TX 77843 College Station, USA

Abstract: An exact solution to the Maxwell–Vlasov equations has been found for a large class of multicomponent current sheets in collisionless plasma, which describe the spatial structure of the current in the magnetopause and consistent inhomogeneous anisotropic momentum distributions of particles with different effective temperatures. Devised sheets allow a nonmonotonic variation of the magnetic field and can have asymmetric, multihump, and sign-alternating profiles of the current density. Profiles of the current of different particle populations can have different scales, contain countercurrents, and be spatially shifted with respect to each other. The model under consideration is applicable to qualitatively describe a magnetopause separating a magnetosphere of a planet from a solar wind or separating regions of the solar wind with different parameters of the plasma and magnetic field.

Received: 06.12.2022
Revised: 15.12.2022
Accepted: 18.12.2022

DOI: 10.31857/S1234567823030072


 English version:
Journal of Experimental and Theoretical Physics Letters, 2023, 117:3, 214–221


© Steklov Math. Inst. of RAS, 2024