Two-point Observations of ULF Fluctuations in the Foreshock

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423438" target="_blank" >RIV/00216208:11320/20:10423438 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mff.cuni.cz/veda/konference/wds/proc/pdf20/WDS20_02_f2_Salohub.pdf" target="_blank" >https://www.mff.cuni.cz/veda/konference/wds/proc/pdf20/WDS20_02_f2_Salohub.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Two-point Observations of ULF Fluctuations in the Foreshock

Popis výsledku v původním jazyce

The foreshock is a region filled with a turbulent plasma located upstream the Earth&apos;s bow shock where interplanetary magnetic field (IMF) lines are connected to the bow shock surface. In this region, ultra-low frequency (ULF) waves are generated due to the interaction of the solar wind plasma with particles reflected from the bow shock back into the solar wind. It is assumed that excited waves grow and they are convected through the solar wind/foreshock, thus the inner spacecraft (close to the bow shock) would observe larger wave amplitudes than the outer (far from the bow shock) spacecraft. The paper presents an analysis of excited ULF fluctuations observed simultaneously by two closely separated ARTEMIS spacecraft on the lunar orbit under a nearly radial IMF. We found ULF fluctuations (in the plasma rest frame) that can be characterized as a mixture of transverse and compressional modes with different properties at both locations. Moreover, we identified both growing and damped waves at the inner spacecraft.

Název v anglickém jazyce

Two-point Observations of ULF Fluctuations in the Foreshock

Popis výsledku anglicky

The foreshock is a region filled with a turbulent plasma located upstream the Earth&apos;s bow shock where interplanetary magnetic field (IMF) lines are connected to the bow shock surface. In this region, ultra-low frequency (ULF) waves are generated due to the interaction of the solar wind plasma with particles reflected from the bow shock back into the solar wind. It is assumed that excited waves grow and they are convected through the solar wind/foreshock, thus the inner spacecraft (close to the bow shock) would observe larger wave amplitudes than the outer (far from the bow shock) spacecraft. The paper presents an analysis of excited ULF fluctuations observed simultaneously by two closely separated ARTEMIS spacecraft on the lunar orbit under a nearly radial IMF. We found ULF fluctuations (in the plasma rest frame) that can be characterized as a mixture of transverse and compressional modes with different properties at both locations. Moreover, we identified both growing and damped waves at the inner spacecraft.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

WDS&apos;20 Proceedings of Contributed Papers — Physics

ISBN

978-80-7378-435-5

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

14-20

Název nakladatele

Matfyzpress

Místo vydání

Praha

Místo konání akce

Praha/ZOOM

Datum konání akce

22. 9. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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