Hybrid simulations of the magnetosheath compression: Marginal stability path.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F03%3A04033537" target="_blank" >RIV/68378289:_____/03:04033537 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Hybrid simulations of the magnetosheath compression: Marginal stability path.

Popis výsledku v původním jazyce

This paper reports a two-dimensional hybrid simulation study which utilizes an expanding box model to represent the slow compression of the plasma as it flows through the magnetosheath. In the code we model the compression as an external force: Physicalsizes of the simulation box decrease with the time. We present results of a simulation which starts in a parameter region of low beta where the plasma is stable with respect to both the Alfvén ion cyclotron (AIC) and mirror instabilities. In this stableregion the plasma behaves double-adiabatically and important proton temperature anisotropy appears. When the plasma become unstable to AIC instability the adiabatic behavior is broken and the AIC waves keep the system close the marginal stability, the theoretical growth rate is about constant and is small and positive. The AIC waves are continuously generated and the proton parallel beta increases with time. This marginal stability behavior is slightly disrupted for high proton parallel

Název v anglickém jazyce

Hybrid simulations of the magnetosheath compression: Marginal stability path.

Popis výsledku anglicky

This paper reports a two-dimensional hybrid simulation study which utilizes an expanding box model to represent the slow compression of the plasma as it flows through the magnetosheath. In the code we model the compression as an external force: Physicalsizes of the simulation box decrease with the time. We present results of a simulation which starts in a parameter region of low beta where the plasma is stable with respect to both the Alfvén ion cyclotron (AIC) and mirror instabilities. In this stableregion the plasma behaves double-adiabatically and important proton temperature anisotropy appears. When the plasma become unstable to AIC instability the adiabatic behavior is broken and the AIC waves keep the system close the marginal stability, the theoretical growth rate is about constant and is small and positive. The AIC waves are continuously generated and the proton parallel beta increases with time. This marginal stability behavior is slightly disrupted for high proton parallel

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

<a href="/cs/project/IAB3042106" target="_blank" >IAB3042106: Numerická simulace nelineárních jevů v plazmatu okolí Země</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysical research letters

ISSN

0094-8276

e-ISSN

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Svazek periodika

30

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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