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The transition from "double-gradient" to ballooning unstable mode in bent magnetotail-like current sheet. / Korovinskiy, D. B.; Divin, A. V.; Semenov, V. S.; Erkaev, N. V.; Ivanov, I. B.; Kiehas, S. A.; Markidis, S.

In: Physics of Plasmas, Vol. 26, No. 10, 102901, 2019.

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Korovinskiy, D. B. ; Divin, A. V. ; Semenov, V. S. ; Erkaev, N. V. ; Ivanov, I. B. ; Kiehas, S. A. ; Markidis, S. / The transition from "double-gradient" to ballooning unstable mode in bent magnetotail-like current sheet. In: Physics of Plasmas. 2019 ; Vol. 26, No. 10.

BibTeX

@article{01bef90adbc54340be49254e72cf7700,
title = "The transition from {"}double-gradient{"} to ballooning unstable mode in bent magnetotail-like current sheet",
abstract = "The magnetotail-like magnetoplasma configuration is examined for the stability to the transversal mode by means of linear 2.5- and nonlinear 3-dimensional MHD simulations. The exact two-dimensional Kan-like solution of the Vlasov-Maxwell equations is utilized for background equilibrium bent current sheets. Both linear and nonlinear simulations reveal the same features: the bent current sheet is unstable to perturbations with the wave vector pointing in the out-of-plane direction; the unstable mode is localized in the summer hemisphere; in-plane plasma flow is rotating from the earthward/tailward direction in the near-Earth region to the vertical direction in the tail. Rotation of the plasma velocity and variation of the background plasma parameters in longitudinal (Earth-Sun) direction allow considering the observed plasma motions as a transient mode from the so-called double-gradient (in distant tail) to the conventional ballooning (close to the Earth) instability. It is found that the mode localization is controlled by second derivatives of the total pressure in longitudinal and normal (north-south) directions. This feature is rendered by a newly developed quasi-two-dimensional analytical model of the transversal mode in the bent current sheet.",
keywords = "Maxwell equations, Plasma devices, Plasma diagnostics, Vlasov equation",
author = "Korovinskiy, {D. B.} and Divin, {A. V.} and Semenov, {V. S.} and Erkaev, {N. V.} and Ivanov, {I. B.} and Kiehas, {S. A.} and S. Markidis",
year = "2019",
doi = "10.1063/1.5119096",
language = "English",
volume = "26",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics",
number = "10",

}

RIS

TY - JOUR

T1 - The transition from "double-gradient" to ballooning unstable mode in bent magnetotail-like current sheet

AU - Korovinskiy, D. B.

AU - Divin, A. V.

AU - Semenov, V. S.

AU - Erkaev, N. V.

AU - Ivanov, I. B.

AU - Kiehas, S. A.

AU - Markidis, S.

PY - 2019

Y1 - 2019

N2 - The magnetotail-like magnetoplasma configuration is examined for the stability to the transversal mode by means of linear 2.5- and nonlinear 3-dimensional MHD simulations. The exact two-dimensional Kan-like solution of the Vlasov-Maxwell equations is utilized for background equilibrium bent current sheets. Both linear and nonlinear simulations reveal the same features: the bent current sheet is unstable to perturbations with the wave vector pointing in the out-of-plane direction; the unstable mode is localized in the summer hemisphere; in-plane plasma flow is rotating from the earthward/tailward direction in the near-Earth region to the vertical direction in the tail. Rotation of the plasma velocity and variation of the background plasma parameters in longitudinal (Earth-Sun) direction allow considering the observed plasma motions as a transient mode from the so-called double-gradient (in distant tail) to the conventional ballooning (close to the Earth) instability. It is found that the mode localization is controlled by second derivatives of the total pressure in longitudinal and normal (north-south) directions. This feature is rendered by a newly developed quasi-two-dimensional analytical model of the transversal mode in the bent current sheet.

AB - The magnetotail-like magnetoplasma configuration is examined for the stability to the transversal mode by means of linear 2.5- and nonlinear 3-dimensional MHD simulations. The exact two-dimensional Kan-like solution of the Vlasov-Maxwell equations is utilized for background equilibrium bent current sheets. Both linear and nonlinear simulations reveal the same features: the bent current sheet is unstable to perturbations with the wave vector pointing in the out-of-plane direction; the unstable mode is localized in the summer hemisphere; in-plane plasma flow is rotating from the earthward/tailward direction in the near-Earth region to the vertical direction in the tail. Rotation of the plasma velocity and variation of the background plasma parameters in longitudinal (Earth-Sun) direction allow considering the observed plasma motions as a transient mode from the so-called double-gradient (in distant tail) to the conventional ballooning (close to the Earth) instability. It is found that the mode localization is controlled by second derivatives of the total pressure in longitudinal and normal (north-south) directions. This feature is rendered by a newly developed quasi-two-dimensional analytical model of the transversal mode in the bent current sheet.

KW - Maxwell equations

KW - Plasma devices

KW - Plasma diagnostics

KW - Vlasov equation

UR - http://www.scopus.com/inward/record.url?scp=85073108429&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/transition-doublegradient-ballooning-unstable-mode-bent-magnetotaillike-current-sheet

U2 - 10.1063/1.5119096

DO - 10.1063/1.5119096

M3 - Article

AN - SCOPUS:85073108429

VL - 26

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 10

M1 - 102901

ER -

ID: 49553917