Počet záznamů: 1
Contribution of shock heating and plasma expansion to ion temperatureanisotropy and low frequency wave generation in subsolar magnetosheath
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SYSNO ASEP 0446622 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Contribution of shock heating and plasma expansion to ion temperatureanisotropy and low frequency wave generation in subsolar magnetosheath Tvůrce(i) Souček, Jan (UFA-U) RID, ORCID
Escoubet, C. P. (NL)
Grison, Benjamin (UFA-U) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. 26th IUGG General Assembly 2015. Earth and Environmental Sciences for Future Generations : abstracts. - Prague : International Union of Geodesy and Geophysics, 2015
A33p-014Poč.str. 1 s. Forma vydání Online - E Akce Earth and Environmental Sciences for Future Generations. General Assembly of International Union of Geodesy and Geophysics /26./ Datum konání 22.06.2015-02.07.2015 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova plasma ; ion temperature anisotropy ; heliosphere Vědní obor RIV DG - Vědy o atmosféře, meteorologie Institucionální podpora UFA-U - RVO:68378289 Anotace We investigated the anisotropic heating of plasma in the subsolar magnetosheath, comparing the relative importance of the two dominant effects contributing to the formation of ion temperature anisotropy. Behind the bow shock, the anisotropy is largely determined by anisotropic Rankine-Hugoniot conditions, while close to the magnetopause, adiabatic expansion becomes the driving effect. We use data from multiple Cluster passes through the narrow subsolar magnetosheath to investigate the profiles of plasma parameters and occurrence and properties of ULF waves. Tracing the plasma flow from the spacecraft location back to the bow shock suggests that the ion temperature anisotropy depends strongly on the local shock parameters (such asm Mach number and the angle between shock normal and upstream magnetic field) even relatively deep in the magnetosheath. Mirror mode structures are very characteristic for this region, appearing immediately after shock crossing, while Alfvèn-ion-cyclotron waves are found in plasma depletion layer. We also analyzed the dependence of the studied subsolar magnetosheath properties on IMF Bz orientation and other solar wind parameters. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2016
Počet záznamů: 1