Proton core-beam system in the expanding solar wind: Hybrid simulations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F11%3A00373443" target="_blank" >RIV/67985815:_____/11:00373443 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378289:_____/11:00373443

Výsledek na webu

<a href="http://www.agu.org/pubs/crossref/2011/2011JA016940.shtml" target="_blank" >http://www.agu.org/pubs/crossref/2011/2011JA016940.shtml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2011JA016940" target="_blank" >10.1029/2011JA016940</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Proton core-beam system in the expanding solar wind: Hybrid simulations

Popis výsledku v původním jazyce

Results of a two-dimensional hybrid expanding box simulation of a proton beam-core system in the solar wind are presented. The expansion with a strictly radial magnetic field leads to a decrease of the ratio between the proton perpendicular and paralleltemperatures as well as to an increase of the ratio between the beam-core differential velocity and the local Alfven velocity creating a free energy for many different instabilities. The system is indeed most of the time marginally stable with respect tothe parallel magnetosonic, oblique Alfven, proton cyclotron and parallel fire hose instabilities which determine the system evolution counteracting some effects of the expansion and interacting with each other. Nonlinear evolution of these instabilitiesleads to large modifications of the proton velocity distribution function. The beam and core protons are slowed with respect to each other and heated, and at later stages of the evolution the two populations are not clearly distinguishab

Název v anglickém jazyce

Proton core-beam system in the expanding solar wind: Hybrid simulations

Popis výsledku anglicky

Results of a two-dimensional hybrid expanding box simulation of a proton beam-core system in the solar wind are presented. The expansion with a strictly radial magnetic field leads to a decrease of the ratio between the proton perpendicular and paralleltemperatures as well as to an increase of the ratio between the beam-core differential velocity and the local Alfven velocity creating a free energy for many different instabilities. The system is indeed most of the time marginally stable with respect tothe parallel magnetosonic, oblique Alfven, proton cyclotron and parallel fire hose instabilities which determine the system evolution counteracting some effects of the expansion and interacting with each other. Nonlinear evolution of these instabilitiesleads to large modifications of the proton velocity distribution function. The beam and core protons are slowed with respect to each other and heated, and at later stages of the evolution the two populations are not clearly distinguishab

Druh

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

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/IAA300420702" target="_blank" >IAA300420702: Kinetické procesy ve slunečním větru</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

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Geophysical Research

ISSN

0148-0227

e-ISSN

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Svazek periodika

116

Číslo periodika v rámci svazku

—

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

"A11101/1"-"A11101/11"

Kód UT WoS článku

000297062700003

EID výsledku v databázi Scopus

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