Spektrální analýza vysokoenergetic kých elektronů ve slunečních erupcích: případová studie erupce z 20. srpna 2002

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F05%3A00024434" target="_blank" >RIV/67985815:_____/05:00024434 - 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

Multi-Wavelength Analysis of High-Energy Electrons in Solar Flares. A Case Study of the August 20, 2002 Flare

Popis výsledku v původním jazyce

A multi-wavelength (RHESSI, H?, radio, TRACE, MDI) spatial and temporal analysis of solar high-energy electrons is conducted using the August 20, 2002 flare of an unusually flat hard X-ray spectrum. A new method to account for X-ray Compton backscattering in the photosphere (photospheric albedo) has been used to deduce the primary X-ray flare spectra. We show that the contribution of the photospheric albedo to the photon spectrum modifies the calculated mean electron flux distribution. The radio emission and the positions of the H? and hard X-ray sources with respect to the current-free extrapolation of the photospheric magnetic field provide evidence of the closed geometry of the magnetic field and the flare process in low altitude magnetic loops. Thehard X-ray sources are located on the external edges of the H? emission and show chromospheric plasma heated by the high-energy electrons. The fast changes of H? emission are found inside the hard X-ray sources as well as away from them.

Název v anglickém jazyce

Multi-Wavelength Analysis of High-Energy Electrons in Solar Flares. A Case Study of the August 20, 2002 Flare

Popis výsledku anglicky

A multi-wavelength (RHESSI, H?, radio, TRACE, MDI) spatial and temporal analysis of solar high-energy electrons is conducted using the August 20, 2002 flare of an unusually flat hard X-ray spectrum. A new method to account for X-ray Compton backscattering in the photosphere (photospheric albedo) has been used to deduce the primary X-ray flare spectra. We show that the contribution of the photospheric albedo to the photon spectrum modifies the calculated mean electron flux distribution. The radio emission and the positions of the H? and hard X-ray sources with respect to the current-free extrapolation of the photospheric magnetic field provide evidence of the closed geometry of the magnetic field and the flare process in low altitude magnetic loops. Thehard X-ray sources are located on the external edges of the H? emission and show chromospheric plasma heated by the high-energy electrons. The fast changes of H? emission are found inside the hard X-ray sources as well as away from them.

Druh

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

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2005

Kód důvěrnosti údajů

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

Název periodika

Solar Physics

ISSN

0038-0938

e-ISSN

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Svazek periodika

232

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

24

Strana od-do

63-86

Kód UT WoS článku

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EID výsledku v databázi Scopus

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