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Estimation of width and inclination of a filament sheet using He II 304 Å observations by STEREO/EUVI View all abstracts by submitter

Sanjay Gosain   Submitted: 2010-01-18 03:21

The STEREO mission has been providing stereoscopic view of the filament eruptions in EUV wavelengths. The most extended view during filament eruptions is seen in He II 304 Å observations, as the filament spine appears darker and sharper. The projected filament width appears differently when viewed from different angles by STEREO satellites. Here, we present a method for estimating the width and inclination of the filament sheet using He II 304 Å observations by STEREO-A and B satellites from the two viewpoints. The width of the filament sheet, when measured from its feet to its apex, gives estimate of filament height above the chromosphere.

Authors: Sanjay Gosain and Brigitte Schmieder
Projects: STEREO

Publication Status: To appear in Annales Geophysicae
Last Modified: 2010-01-18 13:06
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