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Paper: 2D Observation of a Small Active Region in Hα
Volume: 368, The Physics of Chromospheric Plasmas
Page: 119
Authors: Gueltekin, A.; Bostanc., Z.F.; Al Erdogan, N.
Abstract: A small active region on the solar chromosphere was observed with high spatial and spectral resolution in Hα. The data were obtained with the Göttingen Fabry-Pérot Spectrometer mounted in the Vacuum Tower Telescope at the Observatorio del Teide in May 2002. Intensity and velocity maps for different line widths were derived over the two-dimensional field of view by applying the Lambdameter method. Some physical parameters like the source function, the line-of-sight velocity, the Doppler width, and the optical depth of fibril-like structures were determined using Beckersí cloud model. First results of this study are presented.
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