Non-LTE Analysis of Lyman-Line Observations of a Filament with SUMER

(2) Observatoire de Paris; B. Schmieder (2); Czech Republic; France); LESIA; Meudon; Ondrejov; P. Heinzel (1) ((1) Astronomical Institute AS; P. Schwartz (1); Section Meudon

arxiv: 0704.3539 · v1 · submitted 2007-04-26 · 🌌 astro-ph

Non-LTE Analysis of Lyman-Line Observations of a Filament with SUMER

P. Schwartz (1) , B. Schmieder (2) , P. Heinzel (1) ((1) Astronomical Institute AS , Ondrejov , Czech Republic , (2) Observatoire de Paris , Section Meudon , LESIA

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Meudon France)

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keywords filamentalphadetectornon-lteobservationsobservedsumeranalysis

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We present non-LTE diagnostics of the filament observed by SOHO/SUMER on May 27, 2005 in the whole Lyman series. The filament was situated close to the disk center. The Ly_alpha observations were carried out with normal voltage of detector A. The slit was placed at the central part of the detector -- outside the Ly_alpha attenuator. Therefore, the observed profiles of this line could be calibrated reliably.

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Non-LTE Analysis of Lyman-Line Observations of a Filament with SUMER

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