Research Information System
ASP Conference Series Coimbra Solar Physics Meeting: Physics of the Chromospheric Plasma, Coimbra, Portugal, 9 - 13 October 2006, vol.368, pp.119-122
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-Perot 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 Beckers’ cloud model. First results
of this study are presented.