Variations of Energetic Particle Fluxes Around Significant Geomagnetic Storms Observed by the Low-altitude DEMETER Spacecraft

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10440090" target="_blank" >RIV/00216208:11320/21:10440090 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mff.cuni.cz/veda/konference/wds/proc/pdf21/WDS21_07_f2_Gohl.pdf" target="_blank" >https://www.mff.cuni.cz/veda/konference/wds/proc/pdf21/WDS21_07_f2_Gohl.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Variations of Energetic Particle Fluxes Around Significant Geomagnetic Storms Observed by the Low-altitude DEMETER Spacecraft

Popis výsledku v původním jazyce

A superposed epoch analysis is conducted for four geomagnetic storms in the year 2005 with the aim to understand energetic particle flux variations (70 keV to 2.34 MeV) as a function of L-shell, energy, and time from the Dst minimum. Data measured by the low-altitude DEMETER spacecraft are used for this purpose. The storms are identified by a Dst index below -100 nT, as well as being isolated events in a seven-day time window. It is shown that they can be categorized into two types. The first type shows significant variations in the energetic particle fluxes around the Dst minimum and increased fluxes at high energies (&gt; 1.5 MeV), while the second type only shows increased fluxes around the Dst minimum without the increased fluxes at high energies. The first type of storms is related to more sudden but shorter-lasting changes in the solar wind parameters than the second type.

Název v anglickém jazyce

Variations of Energetic Particle Fluxes Around Significant Geomagnetic Storms Observed by the Low-altitude DEMETER Spacecraft

Popis výsledku anglicky

A superposed epoch analysis is conducted for four geomagnetic storms in the year 2005 with the aim to understand energetic particle flux variations (70 keV to 2.34 MeV) as a function of L-shell, energy, and time from the Dst minimum. Data measured by the low-altitude DEMETER spacecraft are used for this purpose. The storms are identified by a Dst index below -100 nT, as well as being isolated events in a seven-day time window. It is shown that they can be categorized into two types. The first type shows significant variations in the energetic particle fluxes around the Dst minimum and increased fluxes at high energies (&gt; 1.5 MeV), while the second type only shows increased fluxes around the Dst minimum without the increased fluxes at high energies. The first type of storms is related to more sudden but shorter-lasting changes in the solar wind parameters than the second type.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA21-01813S" target="_blank" >GA21-01813S: Antropogenní elektromagnetické emise a jejich vliv na vnitřní magnetosféru Země</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

WDS&apos;21 Proceedings of Contributed Papers — Physics

ISBN

978-80-7378-455-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

50-57

Název nakladatele

Matfyzpress

Místo vydání

Praha

Místo konání akce

Praha/ZOOM

Datum konání akce

15. 6. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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