About: Non-Lte Modelling of the EUV Filament Based on Soho/sumer Observations of the Hydrogen Lyman Lines     Goto   Sponge   NotDistinct   Permalink

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  • Byly studovány vlastnosti plazmatu EUV filamentu pomocí non-LTE modelování Lymanových čar vodíku. EUV filament byl pozorován 15. října 1999 družicí SOHO. Z modelování vyplývá, že pokles intenzit koronálních čar v EUV rozšíření tohoto EUV filamentu může být způsoben jenom tzv. „volume blocking“ mechanizmem, nikoliv absorpcí. Čáry přechodové vrstvy s vlnovou délkou pod hranou Lymanovského kontinua také vykazují pokles intenzity v EUV rozšíření. No „volume blocking“ mechanizmus nemůže ovlivnit čáry přechodové vrstvy. Proto navrhujeme jakýsi hybridní model EUV rozšíření složený z vysoko ležících opticky tenkých struktur a nízko položených opticky tlustých struktur. (cs)
  • The plasma properties of the EUV filament observed SOHO on 15 October 1999 were studied using a non-LTE modelling of hydrogen Lyman lines profiles. From this modelling it follows that reduction of intensity of coronal lines in the EUV extension of this EUV filament can be only due to the volume blocking, not due to absorption. But transition-region lines with wavelengths below the hydrogen-Lyman continuum head have also depressed intensities in the EUV extension. And volume blocking cannot influence the transition-region line intensities. Therefore we suggest sort of hybrid model composed of high-lying extended optically thin and of low-lying optically thick structures.
  • The plasma properties of the EUV filament observed SOHO on 15 October 1999 were studied using a non-LTE modelling of hydrogen Lyman lines profiles. From this modelling it follows that reduction of intensity of coronal lines in the EUV extension of this EUV filament can be only due to the volume blocking, not due to absorption. But transition-region lines with wavelengths below the hydrogen-Lyman continuum head have also depressed intensities in the EUV extension. And volume blocking cannot influence the transition-region line intensities. Therefore we suggest sort of hybrid model composed of high-lying extended optically thin and of low-lying optically thick structures. (en)
Title
  • Non-Lte Modelling of the EUV Filament Based on Soho/sumer Observations of the Hydrogen Lyman Lines
  • Non-Lte Modelling of the EUV Filament Based on Soho/sumer Observations of the Hydrogen Lyman Lines (en)
  • NLTE modelování EUV filamentu použitím Lymanových čar vodíku pozorovaných na spektrografu SOHO-SUMER (cs)
skos:prefLabel
  • Non-Lte Modelling of the EUV Filament Based on Soho/sumer Observations of the Hydrogen Lyman Lines
  • Non-Lte Modelling of the EUV Filament Based on Soho/sumer Observations of the Hydrogen Lyman Lines (en)
  • NLTE modelování EUV filamentu použitím Lymanových čar vodíku pozorovaných na spektrografu SOHO-SUMER (cs)
skos:notation
  • RIV/67985815:_____/05:00031727!RIV06-AV0-67985815
http://linked.open.../vavai/riv/strany
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  • P(IAA3003203), Z(AV0Z10030501)
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  • 533047
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  • RIV/67985815:_____/05:00031727
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  • filaments; hydrogen Lyman lines; non-LTE modeling (en)
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  • [424CABF892A8]
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  • The Dynamic Sun: Challenges for Theory and Observations. Proceedings of the 11th European Solar Physics Meeting
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  • Heinzel, Petr
  • Schmieder, B.
  • Schwartz, Pavol
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number of pages
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  • ESA Publications Division
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  • 92-9092-911-1
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